API Accu-Clear Freshwater Aquarium Clarifier

Rated 4.0735 out of 5 stars


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Top IngredientsDeionized Water, Aluminum Chlorohydrate, Polyelectrolytes.100% Natural, novel Bacteria mixture
Fish TypeTropical FreshwaterTropical FreshwaterBetta, Bottom Feeder, Cichlid, Discus, Goldfish, Tropical FreshwaterTropical FreshwaterTropical Freshwater
Aquarium TypeFreshwaterFreshwaterFreshwaterFreshwaterFreshwater

About This Item


  • Formulated to clear cloudy or green water within several hours.
  • Clumps tiny particles together for easy filter removal.
  • Safe solution for freshwater fish and plants.
  • Just use once a week as part of routine maintenance.
  • The tan, translucent liquid is completely odorless for your convenience.

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Play Video: Learn More About API From Our Team of Experts
Learn More About API From Our Team of Experts

About API Water Conditioners

It’s Smart To Be Proactive!

The best way to keep your aquarium clean is to maintain good water quality. This will help keep your fish strong and vibrant and prevent disease. Water conditioners and test kits from API can help you keep your aquarium water safe and healthy.

How Do I Maintain a Healthy Environment?

It is important to test your aquarium water weekly to ensure it stays healthy for your fish.  In addition, a bi-weekly partial water change of no more than 25% will help reduce toxic buildup, remove debris the filter missed, and replenish the oxygen available to your fish.

Feed Twice Daily and Test Water Weekly

Feed your fish twice a day, check their water temperature, and observe them to make sure they are active. You should also test water quality weekly for optimal safety. For fish to thrive, their water must closely match that of their natural environment—poor water quality can cause stress, illness and even fish loss. The 6 important parameters for healthy aquarium water are ammonia, nitrite, nitrate, pH and water hardness (GH & KH). All of these can vary over time and are invisible to the eye.

Change Water and Restore the Ecosystem

In a closed aquarium environment, there are no natural rivers or streams to carry away debris and other waste materials. That is why you should replace 25% of your aquarium water every two weeks, making sure to add water conditioner to your tap water to make it safe for your fish. You should also change your filter media and clean your gravel monthly. Adding beneficial nitrifying bacteria with API Quick Start when you do will help restore your aquarium’s fragile ecosystem and avoid disruption.

What Do API Products Do and When Do I Use Them?

API Test Kits

Use test kits weekly to monitor water quality parameters, which can vary over time and impact the health of your fish.

API Stress Zyme

Using this every week will help keep your aquarium clean and your gravel and ornaments sludge-free.

API Algaefix

Use weekly to control algae growth and keep aquarium glass, ornaments and plants clean.

API Stress Coat

Use every 2 weeks during water changes to make tap water safe, and when adding fish, or when fish are injured.

About API

The team at API has a passion for fish and understands the rewards and relaxation fishkeeping can bring. For almost 60 years, they have developed premium products with a focus on proven and effective results. API offers a range of testing kits, water conditioners and nutritionally superior fish foods. They are dedicated to making a better underwater world for the benefit of fish and those who keep them.

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Questions & Answers

21 Customer Questions

Is this safe for African Dwarf Frogs and snails?
Answer by ChewySep 08, 2020
This Aquarium Clarifier is safe for snails and frogs.

Is API Accu-clear freshwater aquarium clarifier safe for cherry shrimp?
Answer by ChewyFeb 13, 2022
The Accu-Clear can be used in tanks containing cherry shrimp.

Will this product clear up cloudy water caused by bacterial bloom?
Answer by ChewyDec 03, 2020
API ACCU-CLEAR will help to clear the cloudiness caused by bacterial blooms, but does not address the underlying cause. As a result, the cloudiness will come back quickly unless the main cause of bacterial blooms is treated.

Should the fish be removed when using this or can I use it while they are in their home?
Answer by ChewyMar 08, 2021
API Accu-Clear Freshwater Aquarium Clarifier is specifically formulated for use in freshwater ponds. You can put it directly into the pond without removing the fish.

ReviewsWrite a Review

Rated 4.0735 out of 5 stars
68 Ratings
Would recommend to a friend

66 Customer Reviews

Rated 5 out of 5 stars
By Audrey on Oct 20, 2023

Works great! Highly recommend

This product work much better than any other clarifier I’ve used. Previously I had tried Seachem Clarity which made me water 10x more cloudy and after 48+ hours I had to do a water change to clear things up and wait another week. I tried this API Accu-Clear and it made my tank crystal clear in hours!

Rated 5 out of 5 stars
By Suzette on Nov 14, 2023

After struggling with yellow/green water, we gave this a try. The water cleared up within the hour in our 20 gallon tank. Will definitely continue to use and absolutely recommend giving it a try!