- 32%

Kordon AmQuel Plus Aquarium Water Conditioner – Instantly Detoxifies Ammonia, Nitrite, Nitrate, and Chlorine Remover for Freshwater & Saltwater Aquariums, 16 Ounces

Original price was: $15.27.Current price is: $10.39.

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Price: $15.27 - $10.39
(as of Mar 26, 2025 05:50:48 UTC – Details)


Unique water conditioner providing actions needed for safe aquarium and pond keeping for fishes and invertebrates. Nontoxic and saves on the need for as many water changes as would otherwise be required. Removes/detoxifies all of the kinds of toxic nitrogen compounds in the water.
Is Discontinued By Manufacturer ‏ : ‎ No
Product Dimensions ‏ : ‎ 2.25 x 2.25 x 8.5 inches; 1 Pounds
Item model number ‏ : ‎ MODEL-33456
Department ‏ : ‎ Unisex-Adult
Date First Available ‏ : ‎ June 20, 2004
Manufacturer ‏ : ‎ KORDON
ASIN ‏ : ‎ B006OONEOA
Country of Origin ‏ : ‎ USA

Kordon amquel plus 16oz
Safe to use with other water conditioners and organic herbal fish medications
Removes/detoxifies toxic

Customers say

Customers find that the aquarium pond water treatment works well for them. It detoxifies ammonia and nitrates, lowering ammonia levels and reducing nitrites. Many customers consider it an excellent value for money. They are pleased with the dosage instructions and water treatment. However, some have differing opinions on fish health, pH levels, and smell.

AI-generated from the text of customer reviews

13 reviews for Kordon AmQuel Plus Aquarium Water Conditioner – Instantly Detoxifies Ammonia, Nitrite, Nitrate, and Chlorine Remover for Freshwater & Saltwater Aquariums, 16 Ounces

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  1. Angel baby Skys

    Works better than prime , no smell
    So I’ve been useing this product for few weeks , It has same benefits as secham prime minus the smell and last way way longer than prime , I am able to have my fish go through a cycle ie high nitrite and ammonia levels and they are happy as a camper . I didn’t get this product to do that but a tank cycle crashed , I was tired of rotten egg smell and only 2 day guarantee safety, so I bought this . Within 1 min of adding this product my fish went to acting normal , one min previously they were all sluggish and looking rough with 1 ppm nitrite spike . As you can sew this is a community 20 gallon tank . With glowfish pristilas , cory cat , betta females , mollys and ,neons ( not over crowded) just right . One fish had babies I didn’t realize until I saw 2 at the top ( black mollys ) well only 2 were seen , so I am assuming many got eaten or taken into the Hob filter and cause a ammonia then nitrite spike . This you can add and if cycle crashes its protects your fish back through a cycle . Highly recommend

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  2. brad

    Easy to use and reliable
    Works great and easy to use.

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  3. Ryan’s wife

    All new hobbiests should have decorinator with ammonia detoxifier
    I’ve tried so many water conditioners in the last two years and they all take chlorine out of tap water. Some are more complicated to measure, some want you to wait a couple hours, this one takes care of chorine and amonia and I am easy to measure – it’s also inexpensive which it’s important when your’re a newbie and have many overstocked aquariums- like me.. I use about 3 bottles a month for 11 aquariums. 3 gal-to 65 gallons.

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  4. dlpich

    Good Conditioner
    I use it when I do water changes in my big freshwater tank. It will not get rid of ammonia, it helps convert toxic ammonia into safe levels while the filter catches up and does its job.

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  5. Amazon Customer

    A Good product but use with caution as it drops PH and oxygen.
    I’ve used this product on my 55g Fresh and a 10g fresh water aquarium. It does indeed do what it promises on the label and did indeed lower my nitrates and in my 10g aquarium my amonnia as well.My measured nitrate drop 10-20 PPM in my 55g freshwater after 2 days.However, I would excersise caution based on other observations in both of my aquariums. In both of my aquariums, I observed a drop in PH to the lower side of .3 to .6 within one day.The use of PH buffers to raise the PH and keep it stable is highly recommended.It also drops the oxygen level dramatically for at least a day so having an air stone or bubbler is an absolute must. DO NOT dose your tank without increasing the oxygen level via an air stone or youmay lose your livestock. After a couple of days the oxygen level seems to rise again.The product label does tell you to increase your oxygen levels when dosing.

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  6. Amazon Customer

    Actually works!
    I was having an ammonia spike in my tank for the last week, kept changing the water and nothing got better so out of desperation to save my fish I got this. I can honestly say this works! Tested my tank early this morning and it was still high so I added some of this in there, then I tested again after letting it run it’s course. Ammonia levels have gone down! I will keep checking of course to make sure but so far I’m super impressed with this

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  7. Bamboo Dan

    Does the job removing all traces of Ammonia, Nitrite, & Nitrate!
    My 240 gallon acrylic tank was cycling, the ammonia stayed high overlong, even the plants were complaining. Added Amquel +, saw the ammonia go down within a half-hour. Ditto with nitrites. Nitrates have not gone above zero since adding. I’m pretty impressed … and that doesn’t happen easily.NOW … here’s the rub: Kordon claims this doesn’t interfere with cycling a tank, just that it binds ammonia, nitrite, and nitrate … I guess like chemical sequestration. They imply it doesn’t come back into solution, but they do say the nitrogen cycle bacteria can still break stuff down. Also, there doesn’t seem to be any consensus, either from the manufacturer or consumers, on how often you can/should add more, or if there is some toxicity level. Kind of vague. If you plan repeat doses, I’d tread carefully, and only base additional doses on testing. Also, to be able to get an accurate reading, there are certain reagent systems that are invalid if you use Amquel+ …. but the readily available API Master Test Kit does the job nicely.

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  8. Sapphire A

    Amazing product if you know how to use it
    This does exactly what it says on the bottle. I love buying Kordon products for my fish tank because I’ve never had a problem with any of them and you get a good amount for a good price. As long as you follow the directions on the bottle (or are experienced with keeping aquariums) then I would recommend adding this to your aquarium cleaning routine along with another good water conditioner.

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  9. chrissa35

    I originally use Prime. However, I don’t think it’s very effective in removing the ammonia. My tap water contains 1ppm ammonia ( Chloramine) so I need better solution.I use both API master kit and Monitor Ammonia Test kit to test ammonia after using Amquel Plus and Novaplus together.You could see it becomes yellow (0 ppm) from green ( 1ppm).I used 15 ml of 30 gallon tank.Since I don’t have livestock so I don’t know any side effects to fish. But so far it meets my goal.I like it ! Also recommend Monitor test kit as the color is more distinguishable.

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  10. Ian C.

    Got this because I’d seen some amazing reviews. I was a bit nervous about using it after seeing a few terrible reviews too. I followed the instructions to the letter. My nitrates were sitting around the 80ppm mark. No chance of survival for any invertebrates. Even doing big water changes I had been struggling to regain control. It has taken a couple of weeks of using this and two water changes. I now have the nitrates down to 10ppm. Almost there. I have tried other products that haven’t helped at all. This stuff is brilliant. My fish are all healthy. There are no signs of ill effect at all. My unwanted algae has almost gone and my goby is more active. I will continue using this and be ordering more. I strongly recommend this product if you are struggling with nitrates and literally throwing money down the drain with water changes that have little effect. Regain control with this stuff.Update… just checked my nitrates again and they now read 0ppm. Pretty much the only time they have ever been at zero.Update number two.Well, I got lazy with water changes and let everything get out of control. I lost fish and got told off by the wifey!A bit of tlc and using this stuff and we’re back to zero nitrates again. This stuff is just amazing and can help people like me that get lazy from time to time. I would say it’s worth having for those just in a case moments.

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  11. TheGamer

    I’ve been using this product for sometime now and it removes ammonia within hours. It’s a shame that it has to come all the way from the US to the Uk and there isn’t a more local supplier. Recommended.

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  12. KG

    This stuff works wonders when trying to keep ammonia levels from harming your fish. Sometimes water changes can’t be done as quickly as I would like. This stuff gives me the piece of mind to stretch it a little between changes. It doesn’t get rid on ammonia but makes what’s there harmless . Fish stay happy and healthy.

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  13. roxee004

    Super produit

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    Kordon AmQuel Plus Aquarium Water Conditioner – Instantly Detoxifies Ammonia, Nitrite, Nitrate, and Chlorine Remover for Freshwater & Saltwater Aquariums, 16 Ounces
    Kordon AmQuel Plus Aquarium Water Conditioner – Instantly Detoxifies Ammonia, Nitrite, Nitrate, and Chlorine Remover for Freshwater & Saltwater Aquariums, 16 Ounces

    Original price was: $15.27.Current price is: $10.39.

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