API Aqua Essential Aquarium Treatment, 16-fl oz bottle

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About This Item

Details

  • Highly-concentrated treatment works instantly to transform your tap water, so it’s safe for fish in freshwater, saltwater, and planted aquariums.
  • Reduces the risk of fish loss when starting or maintaining a fish tank.
  • Removes chlorine, chloramines and heavy metals that are dangerous for your finned friends.
  • Also removes toxic ammonia that is continually released by fish through their gills, urine and solid waste.
  • Eliminates nitrates, which can be harmful to fish, and lead to algae growth.

Instructions

Learn More About API From Our Team of Experts

Frequently bought together

Questions & Answers

5 Customer Questions

Is this safe for axolotl?

Answer by Chewy • Aug 20, 2022
AQUA ESSENTIAL water conditioner instantly removes toxic ammonia, nitrate and nitrite levels in freshwater, saltwater and planted aquariums. It is safe to use AQUA ESSENTIAL with other aquatic animals.

Can I used this with Stress Zyme and stress coat? Also, I'm doing partial water changes (like 5 gallon to 29 gallon tank) that I'm leaving the water out so to dechlorinate it. Do I dose based on the amount of water changed for each product (if able) or for the whole 29 gallon tank? Thank you!

Answer by Chewy • Jan 21, 2022
API Aqua Essential can be used in conjunction with any other API water conditioner or medication. Using the dosing cap on the bottle, add 5 milliliters per 50 gallons of aquarium water to treat tap water. Add 5 milliliters per 10 gallons of aquarium water to remove ammonia, nitrite, and nitrate. We advise you to wait 24 hours after dosing then do a water change. If you dose within that 24 hour period there is no danger to the animals/plants in your aquarium. A follow-up water change is always beneficial to an aquatic system.

is this safe to use in a turtle tank that also has fish?

Answer by Chewy • Feb 27, 2022
This treatment is suitable to be used on a tank with fish and other aquatic animals.

Will this effect this effect the plants in my aquarium?

Answer by Chewy • Sep 22, 2022
This aquarium treatment is able to be used with live aquarium plants.
Reviews
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4.6
Rated 4.6 out of 5 stars
65 Ratings
Terms & Conditions

20 Customer Reviews

Rated 1 out of 5 stars
By Pambam on Sep 19, 2025

Very disappointed

Did not follow delivery instructions and I also called FedEx and they did the same thing and they put my items on the front porch which is not allowed there. I had

Did not follow delivery instructions and I also called FedEx and they did the same thing and they put my items on the front porch which is not allowed there. I had instructions exactly where to put them and no one did their job. I'm disabled and those packages are still sitting there and I cannot retrieve them. And 9 out of 10 it will be stolen. And I just going to have to sit there until Monday when I have a caregiver you can retrieve them for me. If they're still there. I will never order from you guys and or have FedEx deliver anything of mine again

Rated 5 out of 5 stars
By TONIA on Jan 14, 2026

Good reviews

Haven't used this product yet but it did have good reviews and I'm assuming it's going to work great

Haven't used this product yet but it did have good reviews and I'm assuming it's going to work great

Rated 5 out of 5 stars
By Claire on Nov 8, 2025

Seems fine

Look I have no idea if this works great or not. My fish are alive but it’s hard to judge their happiness. I’ve had them for years so that’s saying something, ri

Look I have no idea if this works great or not. My fish are alive but it’s hard to judge their happiness. I’ve had them for years so that’s saying something, right?

Rated 4 out of 5 stars
By Kenneth on Jun 26, 2025

Product is Fine but delivery was dissapointing

FedEx is the delivery service for Chewy products. In our townhouse neighborhood front doors are on the opposite sides of the buildings from the garage doors. There

FedEx is the delivery service for Chewy products. In our townhouse neighborhood front doors are on the opposite sides of the buildings from the garage doors. There is no security for entry to the neighborhood. There have been occasions when passing people have taken objects that were left at the garage doors. the FedEx delivery person left the package at the garage door, took a picture that was labeled 'left at front door.' I was away all day. When I got home in the afternoon, the package was gone. I filed a missing package report with FedEx stressing the fact that the package had not been left at the front door as proven by the picture taken by the driver and why delivery to the front doors is important. The next morning one of my neighbors, who had seen the package and taken it in, left it at my front door. I closed the problem ticket with FedEx, but am now reluctant to order from Chewy unless I am certain that I am going to be home to receive it. personally.

Rated 1 out of 5 stars
By Jarub on Jun 24, 2025

Never received.

Still haven't received item. FedEx says "Damaged in transit. Handling per shipper instructions." But shipper (Chewy) still has not reach out to me or sent a replacement

Still haven't received item. FedEx says "Damaged in transit. Handling per shipper instructions." But shipper (Chewy) still has not reach out to me or sent a replacement product. So I'd say no stars if I could since I have no product.

Rated 5 out of 5 stars
By Scherry on Nov 5, 2025

Works great.

It takes the place of some other chemicals. Works well.

It takes the place of some other chemicals. Works well.

Rated 5 out of 5 stars
By CareyG on Dec 15, 2025

Good stuff

Great all in one water conditioner.

Great all in one water conditioner.

Rated 5 out of 5 stars
By Marinia on Jun 30, 2025

Works

I got the wrong size wanted the 16 oz Next time I will read more closely

I got the wrong size wanted the 16 oz Next time I will read more closely

Rated 5 out of 5 stars
By Debbie on Feb 24, 2025

Awesome!

This worked immediately to improve my water parameters especially for nitrates 3 which was high in my aquarium. So happy I found this product and gave it a shot

This worked immediately to improve my water parameters especially for nitrates 3 which was high in my aquarium. So happy I found this product and gave it a shot!

Rated 5 out of 5 stars
By Alma on Mar 24, 2025

Very Easy to order!

So easy to order and fast delivery! Love it! Thank you Tons.

So easy to order and fast delivery! Love it! Thank you Tons.