HYDRA Fountain Clear 250ml Treats 7,500L Highest Dilution Rates – Best Water Feature Cleaning Fountain Cleaner Treatment Keeps Water Crystal Clear from Algae, Green Water, Biofilm Build-up


Fountain Clear products - clear water in the backgroundWater Feature - Fountain on the black background - White Fountain - Clean, sterilised WaterFountain Clear Before after resultNature Water Fountain Clear WaterDilution Rates


Dimensions: 9 x 5 x 14.5 cm; 340 Grams
Manufacture: Hydra International Ltd
Dimensions: 9 x 5 x 14.5 cm; 340 Grams

119 Responses

  1. Anonymous says:

     United Kingdom

    A few drops of this work magic! I have two water features in a south west facing garden, and a few drops of this liquid eats away any algae/mould and keeps it away. I am very glad I found it.

  2. EdmundoBJBY says:

     United Kingdom

    Had a problem with the water in our feature turning green after a few days. This products had good reveiws so gave it a try. Its been 2 weeks since I drained and refilled the water feature and its still clear so seems to be doing its job well. It says to treat every week but so far so good

  3. JohannaRobichau says:

     United Kingdom

    Golden Review Award: 2 From Our UsersUsed in my birdbath with a solar pump keeps the water very clea

  4. Anonymous says:

     United Kingdom

    Golden Review Award: 2 From Our UsersUsed only a small amount in our fountain and with all this hot weather it’s still running clear after 4 wks

  5. peachymilk says:

     United Kingdom

    I’ve used powdered products before to try to keep the water feature clear, but they never worked particularly well, and didnt do anything for algea. Admittedly I haven’t tested this product in the height of algea season yet, but it’s doing a fantastic job so far of keeping the water crystal clear.

  6. Anonymous says:

     United Kingdom

    It cleared the water in my fountain in 5 min brillia

  7. Anonymous says:

     United Kingdom

    Added to our water features, clearest they have been for years – and I have tried lots of alternatives.

    Need to get it in a larger bottle!

  8. BartSargood says:

     United Kingdom

    This is the only product I have ever bought that 100% does what it promises!
    My water feature was a mass of Algiers due to the heat. Crystal clear and flowing beautifully within 2 days.

  9. ClydePVOoawlur says:

     United Kingdom

    The water feature I have is small but was very green and discoloured water. Pour small amount in it and clean as a whistle within days. Didn’t need to clean it prior to pouring. It did the job for me.

  10. Anonymous says:

     United Kingdom

    I use this once a week in my water feature during warm weather but less often in the winter. I find I need to use a bit more than suggested, I use 5ml. I was reassured that it is pet and wildlife safe as garden birds come to drink. The only negative is that it’s hard to just dispense 5ml. I pour some into a little tub and use a syringe.

  11. jacklee says:

     United Kingdom

    We had a little algae on the water feature when we first put the Fountain Clear in and it took a couple of applications to remove it. However, it does the job really well and is lasting. You just need a bit more than the instructions say. Pleased with the results and will purchase agai

  12. Anonymous says:

     United Kingdom

    The water in my garden fountain had gone green and a little smelly. This cleared it straight away, it is now running crystal clear. Only problem is that you need so little it’s quite hard not to overdose.. but it will last for ages. Good value.

  13. Anonymous says:

     United Kingdom

    Seems a rather small bottle however given that you only require a small amount it will last for months. I wish I had tried this sooner as I was forever cleaning my water feature the minute I saw it getting the least been green. I have only been using this product for a few weeks however it has remained so clean and fresh looking since I started to use it I will certainly continue buying this. I highly recommend giving it a go.

  14. Anonymous says:

     United Kingdom

    This fountain clear dose a first class job on garden fountains this is the second bottle we have purchased as we were so impressed with the results from the first time use.

  15. Anonymous says:

     United Kingdom

    Easy to use and dies what it is meant to do.

  16. Diedre says:

     United Kingdom

    My decorative pond was full of green gunge and dead leaves so I emptied it, cleaned it out and added the fluid when I refilled it. Weeks later the water is clear and my fountain hasn’t been blocked up yet.

  17. JacquelAkhurst says:

     United Kingdom

    My DIY fountain kept turning green as grass and leaves fell into it. I cleaned it as best I could but you can still see some of the algae on the rocks. It’s been a couple of weeks and the green from the rocks has gone. Despite petals and other debris falling in, the water stays clear!

    I can also attest that it’s safe for animals as I’ve witnessed a pigeon and my cat drinking from it. Both seem to be completely fine!

    Safe for animals and keeps my mini-fountain algae free

  18. BrookNunnt says:

     United Kingdom

    Brilliant product. After many years of trying to clean the water in a garden feature this one actually worked.

  19. Anonymous says:

     United Kingdom

    Used it to clear murky water in a large fountain.worked a treat within a day

  20. jonathonchristesen says:

     United Kingdom

    Keeps Algae at bay in our water feature, does NOT kill whats already there. Seem to need extra does i

  21. Alex Blake says:

     United Kingdom

    This additive for our small water fountain is excellent. It keeps the water clean fro algae and doesn’t seem to affect the birds who drink and bathe in the water. Only needs half a capful every 2-3 weeks so will last a good while. Very happy with my purchase.

  22. Rebecca Haywood says:

     United Kingdom

    What more can be said. It keeps the water in your water features crystal clear. Even cleared the green water in one I added it to!

    IMPORTANT: just to iterate the label’s warning, DO NOT ADD to water features that contain aquatic life or fish ponds: it’s a strong disinfectant and will kill them.

  23. Anonymous says:

     United Kingdom

    This is by far the best product for de-greening your water feaure. I gave ours the recommended ‘shock’ dosage to start things off, and overnight there was a distinct improvement. Admittedly, ours is not a large water feature (approx. 320 litres), but I was really pleased with how quickly the green algae film died off. The feature looks so much better for having had the treatment. I strongly recommend buying the largest size you can – it may seem a big initial outlay but you will save on the cost per dosage.

  24. JulissaHacker says:

     United Kingdom

    Great for bird bath and small water fountain. Cleared all green water. Quick and easy

  25. RenateHerman says:

     United Kingdom

    From green to crystal clear in just one dose. The solution even improved the flow from the pump on our water feature which sits in a sunny position. Would definitely recommend as it’s animal friendly too in its diluted form

    Fantastic Results

  26. Anonymous says:

     United Kingdom

    Bought this for my water feature as the pump kept getting blocked up !! I’ve used it once and weeks after still had no blockage, would definitely recommend

  27. SimoneWolcott says:

     United Kingdom

    I have Hydra Fountain Clear on subscription, at the recommended dose for our fountain and pool (500l water) one bottle lasts 6 months, so quite economical. It works brilliantly, even though one of my dogs, with her muddy paws enjoys taking a regular dip to cool off. We clean and replace the water just once a year. Highly recommend using this.

    The BEST product for keeping pools crystal clear!

  28. WilliamMclaughl says:

     United Kingdom

    Absolutely brilliant, my water fountain was always going green, with this its crystal clear. Brillia

  29. Cody Perez says:

     United Kingdom

    We have a small fountain and a small amount of the product has clean our fountain and is keeping the water clear. Highly recommend

  30. Anonymous says:

     United Kingdom

    This product keeps the water clear and sparkling…
    The birds love it and so do we.

  31. Anonymous says:

     United Kingdom

    The water had gone really green in this water feature so after reading the reviews I thought I’d chance it!
    It arrived a few weeks ago and has only been used once and that was the day it arrived.
    It’s just beginning to look like it needs a top up now which is amazing as it’s in full sun all day.
    Well worth buying.

    It’s fab!

  32. Anonymous says:

     United Kingdom

    Works well little difficult to work out dosage as the measure level is difficult to read.

  33. Anonymous says:

     United Kingdom

    We have a small fountain, water was always going green but now stays clear ( slight tinge of blue) This is the second time we’ve bought this as the first bottle worked so well (& lasted ages)

  34. MajorKearney says:

     United Kingdom

    Great product easy to use . Used in waterfeature and is crystal clear and only taken 2 day to clean green water .

  35. jeannett says:

     United Kingdom

    Used in a water feature and actually worked really well

  36. adm says:

     United Kingdom

    To maintain the function of water feature free from algae

  37. Anonymous says:

     United Kingdom

    This product is for a garden fountain, and is probably the best that I have used – the water remains clear, and does not clog the filter as many other products do

  38. JoycelyCollins says:

     United Kingdom

    Normally I strip down my water feature to clean it takes two days, however I saw this and thought I would give it a go, three days later green as nearly all gone, really pleased with this product would recommend and buy again.

  39. HSZGlindaqqxi says:

     United Kingdom

    Keeps my fountain water crytal clear and appears to have no impact on the wildlife in my garden. Perfect!

  40. Anonymous says:

     United Kingdom

    Have two water features in the garden.
    Used other adatives in the past to keep water clear, but none work as well as this.
    Does exactly what it says.

  41. Anonymous says:

     United Kingdom

    Easy measuring tube at the top for measuring the right amount. Only in 2 weeks but no sign of algae yet.

  42. Anonymous says:

     United Kingdom

    I have tried many cleaners, this is the best yet. Not pet/wildlife friendly, something I never noticed when ordering. We have a Cat that visits our garden, but he drinks from the stone bird bath, so not worried.

  43. Jess Reyes says:

     United Kingdom 🇬🇧

    I looked at a few products and reviews before chosing this one.
    It worked in hours, water is clear and tinged blue. The birds use it constantly and they sre still alive!

  44. Anonymous says:

     United Kingdom 🇬🇧

    A little goes a long way, didn’t cloud the water and allowed my water feature that kept stopping to flow freely. I would highly recommend this product.

  45. Anonymous says:

     United Kingdom 🇬🇧

    This is fantastic. I read the other reviews and bought some for my water fountain. It does what it says on the ti

  46. GingerYffacbott says:

     United Kingdom

    I have tried many of this type and can honestly say this is the best one ever, no algae all over the summer. Give it a first shot as advised then weekly the smaller dose and you can’t go wrong

  47. linshoes43 says:

     United Kingdom 🇬🇧

    My garden water feature is now running clear, and no longer green. I now plan in the future to use ‘Hydra fountain clear’ on a regular basis . . .

  48. Anonymous says:

     United Kingdom 🇬🇧

    I found it pretty easy to use. It does exactly what it says. Much better & longer lasting result than anything i’ve used previously.

  49. Anonymous says:

     United Kingdom 🇬🇧

    Took a day to work, but has lasted over a week so far. Very pleased, Works better than other products I have bought.

  50. Anonymous says:

     United Kingdom

    I have a small water feature which was forever getting clogged up with algae.
    I have only used a very small amount of hydra fountain clear and the water feature has stayed clear for over a week now.
    This makes it easy to use, and if a small amount is all I will need every few weeks, it will be good value for money.

  51. DerickYKDR says:

     United Kingdom

    Moved my water feature from home to my caravan. Was surprised at how quickly the water went green and ‘eggy’ at home, and at the van, the fountain in in direct sun for most of the day. Never even heard of this before looking but took a punt when I found this on Amazon. Works a treat and no green water or farty odour so far. I’ve have to top up the tank on the fountain weekly in the warm weather and add a shot of this each time. No smell and no slime! I’m happy. Recommended.

  52. Anonymous says:

     United Kingdom 🇬🇧

    Does what it says, brilliantly clear water feature, with no harm to the many birds that bathe and presumably drink from i

  53. OrvilleFYX says:

     United Kingdom

    Cleared the algae and kept fountain clean. One star off because of toxicity and I have to make sure birds don’t drink from the fountain after use

  54. TinaLopezuiwcjl says:

     United Kingdom 🇬🇧

    Only put a few drops into water solar fountain and the water stays clear for weeks and pump works so much better as it’s not getting blocked

  55. Anonymous says:

     United Kingdom 🇬🇧

    This is a great product for our water feature, would definitely recommend to any one the best we have bought,you dont need to use very much so it will last a while great produc

  56. Anonymous says:

     United Kingdom

    Takes some time to work, to be expected I suspect as fountain has not been cleaned for ages

  57. Anonymous says:

     United Kingdom 🇬🇧

    This does exactly what it says in the bottle
    Amazing in my water feature bought it back like new with one treatment Amazing

  58. David Sarasohn The Oregonian says:

     United Kingdom 🇬🇧

    Very easy to use. Has transformed an old stone fountain in a matter of days. The old green algae has now gone from the fountain pool base. The product has also stopped new algae forming.

  59. Google Plus says:

     United Kingdom

    I have an architectural pond and was struggling to keep it clear. Despite filtration and shocking with chlorine, it remained slightly green and slightly cloudy. 24 hours after adding this, it was absolutely crystal clear. Stunning result. HOWEVER this is not compatible with the hydra water dyes. Use aqua brite instead.

  60. Cathy3475ejv says:

     United Kingdom 🇬🇧

    I used this product for a water feature in my garden you just need a small amount to the water and it has a lovely blue ting it will last a long time would buy again very pleased.

  61. Anonymous says:

     United Kingdom

    Excellent! Used in my two waterfall features both of which were turning very green due to the algea build up. When I checked next day it was like I’d just filled them both with fresh tap water.

  62. Leslie Brenner Restaurant Critic says:

     United Kingdom

    Being very lazy, I tried a shock dose of 5ml in my wall fountain without first cleaning the system. The water was cloudy, with wispy fronds of algae.
    Overnight, the water completely cleared and the flow greatly improved – indicating that the internal piping had been cleared too!
    After previously faffing around with pipe brushes and vinegar, I’m absolutely chuffed with how well this stuff performs.
    Does exactly what it says on the tin, as they say

  63. Anonymous says:

     United Kingdom

    Does what ot says on the tin. Really keeps the fountain clea

  64. Texas Tales says:

     United Kingdom 🇬🇧

    A major difference to the water in my water feature after first dose I was amazed how clear the water became when I looked at it the next morning, I would definitely recommend

  65. QuinnBollinger says:

     United Kingdom

    Been using for a while for a water fountain. Water is relatively clear but I guess dust and soil makes the water slight foggy. Might be better appreciated in smaller installations.

  66. Lance Burri says:

     United Kingdom 🇬🇧

    Was a bit sceptical about this product but was guided by the reviews and I was not disappointed, I needed it to clear green algae in my water feature and it did and continues to do so its never been so clean, and I like the the water being blue.

  67. CarissaMoss says:

     United Kingdom

    Seems to be effective at reducing algae growth. Difficult to tell as I’ve only carried out three applications but there’s a definite improvement in the clarity of the water and a lack of green growth on the pebbles and plant holders.

  68. Anonymous says:

     United Kingdom

    I bought this product to treat a green algae accumulation in my water feature, and I have to say it works brilliantly.
    It is relatively cheap to buy, very easy to use (just a small weekly dosage added to the water), and it will last for around a year before I need to buy again.
    I wasn’t expected great results at the price I paid, but have been pleasantly surprised how effective it is. There’s not a sign of the algae coming back since I started using this stuff. Amazing really!

  69. Healthy Living Natural Beauty - Michelle says:

     United Kingdom

    Golden Review Award: 3 From Our UsersI’ve tried a few other products to keep the water clean in my garden fountain but none compared to this. Although the bottle is small, only the tiniest amount is needed so it lasts ages making it very good value for money. One weekly treatment is all that’s needed to keep water clear. It’s safe for birds and animals too, which I was worried about as they drink from the fountain. I will definitely be ordering again!

  70. Anonymous says:

     United Kingdom

    Golden Review Award: 2 From Our UsersI was dubious if this would work as I have tried other products in my water feature but still got green algae. However after reading reviews decided to try. Gave the water feature a good scrub out first, refilled it and put the recommended amount of product in. 2 months later and the same water is still crystal clear!! I am so impressed, no Sign of any algae anywhere and the feature is in full Sun as its the only place I have for it. Its expensive for a small bottle but you only use a small amount so it will last probably a year. Excellent.

  71. silvergirl says:

     United Kingdom 🇬🇧

    Excellent.
    Easy to use, just pour the required amount of product into your fountain.
    Measurement are written on the label, so it’s easy to get the correct amount of product for your fountain size.
    Bird friendly when correctly diluted.

  72. Anonymous says:

     United Kingdom

    Tried other products before. This is the only one to keep the algae away as instructed. Good price, easy to use, will be buying again when needed. Before and after pictures just a week on.

    Good all around Product.

  73. Anonymous says:

     United Kingdom 🇬🇧

    Easy measure to give ideal results. Not using too much each time saves money in the long term. Water becomes Crystal clear as algae is killed off. It does exactly as advertised Great product.

  74. Anonymous says:

     United Kingdom 🇬🇧

    Only added the first dose about a week ago and the water in the fountain is walking freely and absolutely clear. The only downside is that it only takes such a very small amount which is a bit awkward to measure out but otherwise a great produc

  75. KobyKxbzzx says:

     United Kingdom 🇬🇧

    Easy to use, seems to work as advertised so far.

  76. KeeshaBraund says:

     United Kingdom 🇬🇧

    I have my pond for years and this is the clearest it has been . I don’t have anything living in the pond and this is great to keep the water clear . In fact it is crystal clear and any scum or debris just went to the bottom .

    Crystal clear water , clearly amazing produc

  77. Anonymous says:

     United Kingdom 🇬🇧

    This thing is brilliant. I’ve bought tablets previously and my water fountain would still go green and slimey after a few weeks. But I put 1 tiny drop of this and 5 weeks later, still no slime!

  78. Anonymous says:

     United Kingdom 🇬🇧

    This is great, I used it for my bird bath which previously I was constantly having to change the water. Its two weeks since I added fountain clear and the water is still clear and very little is needed.

  79. Anonymous says:

     United Kingdom

    Excellent for fountains that so many of us have these days. One bottle should last for the whole summer. Easy to use.

  80. HanneloAckerman says:

     United Kingdom 🇬🇧

    Easy to use and instructions clear as well. Cleared green algae water within hours in my garden’s water fountain. Recommended

  81. Anonymous says:

     United Kingdom 🇬🇧

    Added solution to a very green water feature and after a few hours it was so much cleaner and after a couple of days, it was sparkling clean!!! Value for money will last for yonks!!

  82. Anonymous says:

     United Kingdom 🇬🇧

    This is a simple to use and effective water treatment to keep the water in my fountain clear and clean.
    I like the ‘squeeze and measure’ bottle that makes dosing easy..
    this is my 3rd bottle – once the sun shines i treat my fountain every week – and I will keep on using i

  83. Anonymous says:

     United Kingdom 🇬🇧

    I have been using this for years now….. always works well in my water fountain. The only issue that I have is that it leaves a Blueish/Green Residue which is very frustrating to say the least, but it really does keep the Algae etc off.

  84. Anonymous says:

     United Kingdom

    I have had a small tree trunk water feature in my garden for about three years now. I always had trouble keeping the water clear and smell free and had to partially drain and refill it every few weeks in the summer. I used Hydra Water Clear this season and it is a brilliant product. Dosed the water as per instructions at the start of the season with the occasional tiny top up every few weeks and clear water and no smell all summer.

  85. Anonymous says:

     United Kingdom 🇬🇧

    This water cleanser works,unlike the more expensive one that we bought from the garden centre where we purchased our fountain from, this one has kept our large 5 tier fountain clear of algae.

  86. EulaConehpukyam says:

     United Kingdom 🇬🇧

    The product worked really well in my water feature clearing the green algae completely.
    It’s easy to use.

  87. PrincesBivins says:

     United Kingdom

    Been using this for a few years now and it’s extremely effective in keeping water features free from algae and other nasties.
    Just a few ml once a week and your water will remain clear and sparkly – it even removed the algae from the surfaces of the water feature!
    Great product.

  88. AugustusJ21 says:

     United Kingdom 🇬🇧

    Have spent a lot of money over the years buying products that claimed to keep my fountain clear of algae. In every case within a week or two the water and fountain turned green. Now six weeks since I treated the fountain with this product and the water is still clear. Delighted.

  89. Anonymous says:

     United Kingdom 🇬🇧

    I have tried several powder additives and none lasted for more than two weeks, a complete waste of time and money but this liquid is fantastic, nearly a month and a half since I started using it and the water is crystal clear, and the birds come and have a bath. With the small amount needed each week for a top up the bottle should last for a considerable time.

  90. Anonymous says:

     United Kingdom

    Golden Review Award: 20 From Our UsersThis worked unbelievably well, in clearing, and keeping away, any algae or discolouration in our two small water features. However, the tiny quantities needed make it very difficult to measure easily. The liquid comes in a great dispenser if you need to treat a swimming pool, or a very large pond – but for the average water feature of, say, 50 litres (still quite a good size!) it only needs 5 millilitres of the solution – and the design of the bottle, great for large quantities, is rubbish for this smaller amount! However well worth persevering, and well worth the money.

  91. Vania82Azo says:

     United Kingdom 🇬🇧

    Brilliant for our kelkay 3 bowls water feature. The previous product we used was not very effective and was very expensive. The feature needs topping up regularly because the wind blows the water away so it needs topping up with solution regularly. Only a small quantity is needed and the water hasn’t been green since we started using it. Very very happy with this product.

  92. Anonymous says:

     United Kingdom

    Golden Review Award: 28 From Our UsersBought an outdoor fountain but never factored in how very quickly blanketweed/algae would green the water. I put a shock dose of Hydra into the water and it cleared it quite well. A week later I drained the fountain, scrubbed the surface and put in fresh water plus another shock dose and a week further on it’s looking completely clear, plus it’s removed the green algae that had been coating the surface of the fountain.

  93. Amanda Oleri says:

     United Kingdom

    Golden Review Award: 13 From Our UsersI read all the positive reviews and really hoped I would be able to leave one as well. And here I am. I couldn’t clean out my entire water feature, so just scooped out as much water as I could and replaced it with fresh. The fountain was squirting out green water before I put the first treatment in (got a syringe from the chemist to make it easier to measure accurately).

    After a few hours, the water coming out was cleaner. Three days later, it was coming through clear and I could see through the water in each part of the feature too (it’s got four tiers). Previously, murky wouldn’t have described it. Now, 10 days in, I have treated it again and the green stuff on the sides of each tier is gradually disappearing. Great stuff – really would recommend. It’s easy to use and doesn’t harm wildlife either. Win-win!

  94. Anonymous says:

     United Kingdom

    Golden Review Award: 27 From Our UsersI bought this for a water feature and added it to water that was already green – so I trebled the suggested quantity. Within a week the water was crystal clear and 2 months later it’s still clear without adding any more.

  95. Anonymous says:

     United Kingdom 🇬🇧

    Bought a new water feature and decided to try and keep the water clear in this one from the start . Read all the reviews and this product stood out from the rest , easy to use and works well . First dose is a bit higher than the regular monthly dose needed and so far it’s done the trick .No sign of any algae or gunk, it does give the water a slight blue tint but that fine with me . Only need a couple of drops a month to top up so think it will be quite economical. Definately recommend .

  96. Anonymous says:

     United Kingdom 🇬🇧

    Golden Review Award: 3 From Our UsersI was careful to read plenty of reviews before buying this as I had been disappointed with some previous algae stopper I had bought from the garden centre. I noticed the difference immediately on use – it did not foam up (like the garden centre one did) It cleared the algae growth immediately and so far it has not come back. I just have to remember to put in a top up each week to keep it that way. Very good product.

  97. Anonymous says:

     United Kingdom 🇬🇧

    As advertised. I purchased this as it is safer with young children around than other similar products. Reasonably easy to apply as there is a reservoir at the top of the bottle, give the bottle a squeeze and the liquid goes up into the reservoir for pouring out. Only problem is once it’s in there it won’t go back into the bottle it came from and when it arrived the reservoir was full meaning I used slightly more that I probably would have for the first application. Fountain looks happy and the water is clear and slime free!

  98. Oilang Maui says:

     United Kingdom 🇬🇧

    Golden Review Award: 4 From Our Usersused ‘oneshot’ fountain clear earlier in the year which was excellent for a month, and then the green came back, its expensive for just one dose, so thought id try hydra fountain clear as its a good price and goes a long way for my fountain, tried to get most of the green water out of fountain but not all, added a dose of this (1ml per 10l) and the water instantly cleared, maintenance dosage for me is 1ml per week, which is good going considering its a 500ml bottle…. all in all, im very pleased with the results so far.

  99. Anonymous says:

     United Kingdom 🇬🇧

    Golden Review Award: 2 From Our UsersNot really a reviewer, usually too much bother but after years of trying unsuccessfully to clear our fountain feature I landed on this product, read the reviews and thought what is there to lose? Let me just say that now in the second week of using after the initial boost dose and the first maintenance dose the fountain has not looked as good for years. Like another reviewer I had reason to call Hydra for advice, they were friendly and helpful with my nave question about dosage. I can’t recommend Hydra highly enough Anybody want to buy a jet-washer?

  100. BarbaraEck says:

     United Kingdom

    Golden Review Award: 45 From Our UsersBought this for my water feature which was suffering badly from green smelly water. Due to the incessant rain we’ve had recently it had filled itself after the winter drain down with natural rain water, I don’t know if this is why it turned green but the water feature clear (not this product) I bought last year wouldn’t clear it.

    On receipt of the Hydra Fountain product I read the advice leaflet and decided to drain the water feature and refill from the tap with the hose pipe, my water feature is fairly large and holds 200 litres of water, which according to the Yorkshire Water website would cost me about 50p to fill (I’m on a water meter), so the 50p was a lot cheaper than the rescue dose advised.

    It is now 3 weeks since I did this and I follow the instructions and add a maintenance dose of 20ml every week (at the recommended rate of 1ml to every 10litres) and so far the water has remained crystal clear. This might be more expensive than some of the other advertised products, but a 20ml dose every week from a 500ml bottle means the bottle will last 6 months.

    So that should be plenty to last before the winter drain down and enough to give me a head start next year.