API AQUA ESSENTIAL Water Conditioner 8 ounce bottle
Original price was: $12.28.$8.68Current price is: $8.68.







Price: $12.28 - $8.68
(as of Oct 08, 2025 17:25:42 UTC – Details)
Treat your tap water, and provide a safe environment for freshwater fish instantly and easily with API AQUA ESSENTIAL water conditioner. Tap water contains chlorine, chloramines and ammonia which can cause gill and tissue damage, breathing difficulty, stress and death. API AQUA ESSENTIAL water conditioner works instantly as a water conditioner to remove chlorine and chloramines from tap water and neutralize heavy metals. API AQUA ESSENTIAL water conditioneris good for both freshwater and saltwater aquariums. API AQUA ESSENTIAL water conditioner also removes toxic ammonia, nitrites, and nitrates to restore a healthy aquatic environment when your test results show high levels of ammonia, which is extremely toxic for fish. With API Aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For close to 60 years, API has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. API Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results.
Language : English
Item model number : 423D
Department : Unisex-Adult
Date First Available : June 4, 2021
Manufacturer : Mars Fishcare
ASIN : B096N5X5Z9
Best Sellers Rank: #27,270 in Pet Supplies (See Top 100 in Pet Supplies) #246 in Aquarium Water Treatments
Customer Reviews: 4.7 4.7 out of 5 stars 967 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Contains one (1) API AQUA ESSENTIAL Water Conditioner 8 ounce bottle; treats up to 2,370 U.S. Gallons
WORKS INSTANTLY: Highly concentrated aquarium treatment works instantly to remove harmful chemicals, making tap water safe for fish in freshwater, saltwater and planted aquariums; Reduces the risk of fish loss when starting or maintaining a fish tank
DECHLORINATOR: Removes chlorine, chloramines, heavy metals which are found in tap water and can cause gill and tissue damage, breathing difficulty, stress and fish death
AMMONIA REMOVER: Removes the toxic ammonia continually released by fish through their gills, urine and solid waste. Uneaten food and decaying organic matter also add ammonia. Small amounts of ammonia stress fish; large amounts of ammonia will kill fish
NITRITES AND NITRATES REMOVER: Produced by fish waste and uneaten fish food, nitrites inhibit respiration and suppress the immune system at low levels, while high levels cause suffocation; Nitrates can be harmful to fish and lead to algae growth
Customers say
Customers find the water conditioner effective at clearing water within 24 hours and binding ammonia/nitrites, while keeping fish healthy and thriving. The product receives positive feedback for its quality, ease of use, and value for money, with one customer noting it lasts for at least a year with weekly water changes.
13 reviews for API AQUA ESSENTIAL Water Conditioner 8 ounce bottle
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Original price was: $12.28.$8.68Current price is: $8.68.
Emily wrye –
10/10
API is my ride or die.
Kat –
Useful for binding ammonia/nitrites
This stuff is great for binding ammonia and nitrites. I started using it after a bacteria crash and I now use it as my regular water conditioner for almost all my tanks. In my experience, it did not actually remove any nitrites or nitrates, but it certainly keeps the fish more comfortable in a crisis. I also only use a slight amount more than the regular dosage to detoxify (necessary because our water is highly chlorinated here) and do not use the higher dose as instructed on the second part of the directions label because when I did, my fish appeared very stressed out and lost some color (though I should note that I did not lose any fish, a water change and a lower dose did the job just fine after). I’m still giving this a 5 star review however, as it was a life saver for a tank crash and seems to be comparable to the higher priced products that are meant to bind toxins and keep your fish safe. I don’t think there are any products that can truly remove the nitrites and nitrates, and no matter what if your levels aren’t going down you can’t avoid the extra water changes. But we keep this stuff on hand at all times now.
Jamie –
Great
Always a great product
K. Annie Heart –
I love this stuff
I love products that do what they say they’re going to do. This one does just that. Great product for the money, my fish are thriving, my water is clear and always safe. Easy to use too.
Randy Butler –
Fish
The fish haven’t complained.
Barbie_Girl –
A little goes a lot
I have 2 smaller fish tanks (5 gal and 20 gal) and have always bought the treatment for new tanks as I thought that’s what u use each time and would need a cupful each time. With this one however u need 1 ml for 20 US gallon. Only 1!! This bottle will seriously last for at least a yr with weekly water changes and the price is unbeatable. It’s a win win all around for this. Works great (you can actually watch the water clear up once u add the treatment in a bucket).
Rachael Swartout –
Love it
This has helped so much with keeping my water parameters at healthy levels
â AM1 Engineerâ –
Our preferred water conditioner!
I’ve tried a number of other water conditioners, some of them my fish are not a fan of, but this one doesn’t seem to cause them any problems so I prefer to use it when setting up my tanks or during routine water changes.Shake the bottle well and pay attention to the dosage. You can use this to treat your tap water prior to a water change or you can use it to treat your water if certain parameters are high (i.e. ammonia, nitrites, nitrates).
Emil –
I have using this for a while nowIt does the job
Alan robnett –
Hopefully the same as stress coat
R –
I like that it comes in a bigger bottle. It’s a good product.
Mrs d angell –
only just tried seems ok
michelle horobin –
Great product makes tap water safe for fish tanks make sure to shake bottle before every use as it seperates while still