envii Chlorine Klear – Dechlorinator & Chlorine Remover

envii Chlorine Klear – Dechlorinator & Chlorine Remover Makes All Pond Water Safe For Fish & Wildlife- Treats 12,500L


Clear your pond. Look After Your Planet. Envii Pond Treatments and Envii Logo GraphicChlorine Klear Dechlorinator that is safe for all fish, pets and wildlifeWorks at any temperature to remove chlorine from tap water

Removes Chlorine Instantly

Chlorine Klear works within seconds to safely neutralise tap water and remove harmful chlorine.

Safe For Fish & Wildlife

Chlorine Klear is a food grade tap water dechlorinator that is safe for all fish, wildlife, pets and filtration systems.

Treats Large Volumes

The concentrated formula of Chlorine Klear enables it to treat large volumes of water. Chlorine Klear is one of the most concentrated dechlorinators on the market and the best value for money.

Works In Any Temperature

Chlorine Klear contains no temperature controlled substances and as a result, can be used at any temperature to either kill algae or prevent any new growth.

Pond KlearChlorine KlearSludge KlearAlgae Klear XtraPond EqualiserBlanketweed Klear
Treats Up To 20,000 Litres Up To 12,500 Litres Up To 30,000 Litres Up To 20,000 Litres Up To 7,500 Litres Up To 40,000 Litres
Clears Murky Water
Clears Green Water
Maintains Healthy Pond
Removes Chlorine from Tap Water
Stabilises pH
Safe For Fish


Dimensions: 18 x 11.2 x 6.1 cm; 560 Grams
Manufacture: Bio8
Dimensions: 18 x 11.2 x 6.1 cm; 560 Grams

68 Responses

  1. Anonymous says:

     United Kingdom

    Anyone with a garden pond needs this during the hotter months hapoy fish as i can keep the pond topped up all year round

  2. MadeleiMirams says:

     United Kingdom

    Item ordered and received within a couple of days. Customer service excellent. We were able to use
    tap water for the pond during the recent very hot spell, and It worked well. Thank you.

  3. BettyHatley says:

     United Kingdom

    Purchased this product for treating a new 4500litre pond before adding fish

  4. CindyG02llwq says:

     United Kingdom

    Seems to work very well no complaints from my fish

  5. Anonymous says:

     United Kingdom

    As we had not had much rain the water level in our pond was low. Our tap water is hard so I bought this to top up the water safely for the wildlife living in it.
    The frogs and newts looked happy afterwards so all good.

  6. Anonymous says:

     United Kingdom

    very easy to use to remove the Chlorine from the pond wate

  7. Anonymous says:

     United Kingdom

    This is used For my wildlife pond which is topped up with tap water which is chlorinated.

  8. Anonymous says:

     United Kingdom

    Does what it says this is my second order very good stuff well worth buying what you waiting fo

  9. Lissa Rankin says:

     United Kingdom

    Golden Review Award: 2 From Our UsersIt seems to work well, but when it arrived the bottle was blown up with pressure inside – foolishly I opened it indoors thinking it would just be air – but the liquid sprayed the walls and came out with real force, staining them. I now keep the rest of the bottle outside. Yes I would get it again, but be very careful when opening.

    seems to work Ok but the bottle almost exploded

  10. DeloresE43 says:

     United Kingdom

    Usually I do not ‘top up’ my wildlife pond with hosepipe water but this summer with no rain coupled with high temperatures which evaporated my pond it became necessary. This product has been a lifesaver for the pond. All you have to do is calculate the volume and apply the solution directly to the pond (no mixing) after topping up. I am happy to report I have had no algae blooms or blanketweed. Highly recommend if you have to use hosepipe water to top up your pond.

  11. summerlee says:

     United Kingdom

    Good value for money lasting a while using itevery day in my home made pond .

  12. TwylaMaughan says:

     United Kingdom

    Easy to use & has worked to clear pond for at least a month so far. Very pleased

  13. Tanaya Tak says:

     United Kingdom

    such great value a small amount goes a very long way

  14. Anonymous says:

     United Kingdom

    Good product, seems to do the job and good value. Be careful when opening it does seem to be under a little pressure so when opening the seal point away from yourself.

  15. EKRDennyqk says:

     United Kingdom

    As with all Envii products, very competent. Has one job, neutralise tap water for a pond refill. I recently had to refill a new 10,000 litre pond liner, in a hurry. This worked instantly, and stood up to an immediate water test.

  16. Zacks Equity Research says:

     United Kingdom

    I’ve been using this for a while now and I’ve had no issues with my fish so this definately does the job. Add the amount required that you will be topping the pond up with and that’s it.

  17. Anonymous says:

     United Kingdom

    I bought this product to clear the water in the pond..which it did..it was easy to use..and the results are fantastic

    Very pleased

    It works as it should..without being expensive

  18. Anonymous says:

     United Kingdom

    Fish seem happy, no signs of ill health from topping up the pond strait from the hose pipe. I feel better too knowing I can keep the pond level right in hot weather.

  19. Sarah Perez says:

     United Kingdom

    Great for dechlorinating water for tomato plants, one drop from a pipette per gallon is all you need. My only issue is the bottle – it looks cool, but one small squeeze on the bottle and the top part fills up instantly and squirts everywhere lol. Be careful when squeezing the bottle!

  20. Anonymous says:

     United Kingdom

    Easy to use when doing partial water changes on my fish pond.

  21. ShermanHacking says:

     United Kingdom

    Only used it half a dozen times, but no signs of the usual green string floating around after topping up.

  22. Anonymous says:

     United Kingdom

    We add this to tap water fro the pond. I have no idea if it works or not but none of the fish have died, and everything is going swimmingly well. It’s more an anxiety reducer than anything, but we all need less anxiety – right?

  23. Anonymous says:

     United Kingdom

    Seemed to work well when added after topping up the pond

  24. WaynePakcys says:

     United Kingdom

    Easy to use however like many past reviews, the measuring chamber arrived full most likely due to pressure during transit. I needed the full amount (20ml) but I’d imagine it would be tricky to measure any less when pouring from full chambe

  25. Anonymous says:

     United Kingdom

    Easy to order and item arrived on time and as described.

  26. Anonymous says:

     United Kingdom

    This is so good , you really need this in your ponds

  27. HershelFarrell says:

     United Kingdom

    I was having problems with murky water in my aquarium and nothing I did made it right. I purchased this and the results fantastic

  28. Anonymous says:

     United Kingdom

    Gave pond one treatment( 4000litres), water is crystal clear . Still algae on pond liner but hopefully with another couple of treatments will clear up.

  29. Anonymous says:

     United Kingdom

    It works and it does it quickly. The only problem is the self filling system is awkward. You gauge the required amount of liquid in the bowl but when you pour by tipping the container it just keeps filling up . It is best to decant the measure into a can then pour into the pond .

  30. Anonymous says:

     United Kingdom

    I haven’t used it yet but I’m pleased with the size of the bottle and the quick delivery.

  31. Anonymous says:

     United Kingdom

    I ha e issues with this , not the contents but the bottle it’s in . When I squeeze it it fills to e lvl I want I let it go is runs back into the bottle I nearly tipped the whole lot in a bucket of water . no valve on the bottom of the tank it fills up , the one I had before had a no return this one u can’t use the measure at all it has a huge hole it just goes back into the bottle . If this is now normal I’ll not buy agai

  32. Anonymous says:

     United Kingdom 🇬🇧

    Delivered very quickly – appears to have worked in pond wate

  33. Brad Jones says:

     United Kingdom 🇬🇧

    Used the product as recommended…. I assume all’s ok as nothing untoward has happened.

  34. Anonymous says:

     United Kingdom

    Keeps pond water healthy for my fish, and at a reasonable price.

  35. Bangs says:

     United Kingdom 🇬🇧

    Topping up my pond with tap water irritates the koi using chlorine klear protects the fish

  36. Anonymous says:

     United Kingdom

    Easy to use and value for money in comparison to some similar products. Delivered fast and well packaged thank you

  37. Ian says:

     United Kingdom 🇬🇧

    Easy to use, my fish are still alive So that’s a bonus,highly recommend and would buy agai

  38. Anonymous says:

     United Kingdom

    Easy application, no messy measuring of liquid. Just squeeze bottle for required amount and off into the pond it goes. Fish’s happy!

  39. Anonymous says:

     United Kingdom

    Golden Review Award: 9 From Our UsersI won’t comment more on the efficacy of the product as others have already done so. However, if, like me, the dosing chamber was completely full when it arrived, it is possible to almost empty it first before opening. Tilt the bottle at angle (carefully turn clockwise) with the dosing feed line uppermost to carefully empty some of the liquid from the dosing chamber back into the feed line. When the feed line is around half full, tilt the bottle counter-clockwise and wait for the liquid in the feed line to empty back into the main chamber. Repeat this action several times until the dosing chamber is almost empty.

    Works well. Full dosing chamber can be emptied after transi

  40. Leanne says:

     United Kingdom 🇬🇧

    Great product in easy to use packaging, would use again.

  41. Nasha Addarich Martínez says:

     United Kingdom

    Delivered promptly. I filled a water butt from the tap, knowing how much it holds. Added the recommended quantity, stirred an ran the contents into the pond. Seems fine. No increase in algae.

  42. Anonymous says:

     United Kingdom 🇬🇧

    Keeps the pond clear and safe for the fish when topping up the pond. Living in the South East of the country, this has be done frequently due to the lack of rain and the sunny days.

  43. AlvinBishop says:

     United Kingdom

    Arrived timely and well packaged.
    Since using my pond has become very productive. Water lilies are quite prolific now.
    I am a repeat buyer and will continue to be.

  44. Anonymous says:

     United Kingdom 🇬🇧

    How does one know how much chlorine is in one’s pond? I don’t trust commercial tests. I am hoping ‘Klear’ will help to keep the pond healthy as I have been topping up with tap water during a dry spell.

  45. Anonymous says:

     United Kingdom 🇬🇧

    its just brilliant. so pleased i found it. ponds looking great now.

  46. Leta90Kbebocxua says:

     United Kingdom

    Liked the fact you could go on line and use the company’s calculator to work out the amount of product needed

  47. Anonymous says:

     United Kingdom

    Very easy to apply to pond and seemed to work well. I can’t guarantee it worked as I don’t have the kit to measure the chlorination of the water but it seemed okay. Most of this would apply to any de-chlorination product but this one seems to me to be the best value for money.

  48. KennethAgaundo says:

     United Kingdom

    Have a large pond and with no rain in sight has been going down rapidly. Need to top up with water so needed this quickly.

  49. BNAMonserrate says:

     United Kingdom

    Golden Review Award: 3 From Our UsersDesignated a water butt from now on for pond use only. Easy to work out quantities of chlorine klear from water butt capacity. Not easy to measure accurately yet though as other reviewers has mentioned, with the chamber is full on delivery. A syringe would do the job brilliantly, so will be investing in one. Now the pond is topped up and fish very happy!

  50. Mike Scott movie critic says:

     United Kingdom 🇬🇧

    Excellent product..quick delivery and well packaged..simple instruction and easy to apply

  51. Sarah Braybrooke says:

     United Kingdom

    Like the product bought as i bought it as i was going to do a complete drain and clean of my pond, but my filter beet me to it and the pipe came out and drained nearly 4000lts out of my pond so now having refilled and used this product the fish are alive and well so will use again dose the job

  52. Anonymous says:

     United Kingdom 🇬🇧

    Excellent product for a large pond when topping up with wate

  53. Anonymous says:

     United Kingdom 🇬🇧

    My fish are very active now, no longer at the bottom of my pond.

  54. RoseannLambrick says:

     United Kingdom 🇬🇧

    Easy to use came quickly and seems to have done what he said

  55. Defying the Limit says:

     United Kingdom

    Have changed the pond water after a thorough clean of the pond,tried to keep as much of the old water as possible,used this product for the new water,all the fish are still accounted for and healthy.

  56. Anonymous says:

     United Kingdom

    De-chlorination of tap water which I use to top up pond from time to time. Normally use 25 ml per 50 litre top up. Lasts a long time

  57. ChastityLewis says:

     United Kingdom 🇬🇧

    I’ve used this product before,it does a good job.

  58. Kyle Hyatt says:

     United Kingdom 🇬🇧

    Treats a lot of water at a good price. What more could you need?

  59.  United Kingdom

    Golden Review Award: 3 From Our UsersBottle design has header tank measure at top which arrives full presumably due to transportation process. Bottle arrived under extreme pressure with bottom of bottle bulging so it doesn’t sit flat on any surface even after opening then. To open you have to pierce a safety covering lid, which then squirts liquid everywhere due to pressure release. This wastes product which is bright blue green and stains. Can’t really measure what squirts out. Bottle design and filling seem wasteful and unhelpful. Hopefully the product content will do the job for aquarium water though.

  60. director says:

     United Kingdom

    Golden Review Award: 2 From Our UsersChanged to this from a more expensive dechlorinator. Very happy, works great at a massively cheaper price. Also very good as if you get your calculations wrong, you can’t overdose, so your fish will be fine.

  61. Francesca Silas says:

     United Kingdom

    Container delivered with measuring cup full and under pressure. Product shot out of seal when removed spilling about a third of the contents on the ground.
    Product itself is very good.

  62. Anonymous says:

     United Kingdom 🇬🇧

    Came on time, and did what it said on the bottle

  63. Anonymous says:

     United Kingdom 🇬🇧

    Used this during pond clean out. Fish were returned to the pond immediately after and we suffered no losses. Happy fish!

  64. FelicitYoo says:

     United Kingdom 🇬🇧

    have not used it yet but am sure it will be fine thank you

  65. Anonymous says:

     United Kingdom 🇬🇧

    Love the fact that it has a small measuring cup attached. Same day delivery – all in all perfect.

  66. Anonymous says:

     United Kingdom 🇬🇧

    I needed to ensure my fish are safe from the chlorine in tap water when I top up my pond. Great results. Thank you. Have another bottle ready for next time.

  67. Anonymous says:

     United Kingdom

    I have a 80L and a 140L tank. It’s much easier to use a pond product than dump a whole bottle of some other expensive item in. You will need a pipette though and some know how on ratios.

  68. Dale Smith says:

     United Kingdom 🇬🇧

    Very easy to use. No adverse affect on the fish at all. I always use Envii products for everything I need for the pond. Does exactly what it says it will do so to me, that’s great value!