API Accu-Clear Freshwater Aquarium Clarifier
Why Autoship?
- FREE access to chat with licensed vets 7 days a week.
- Save 5% on all future Autoship orders.
- No fees, no commitments - cancel Autoship anytime.
Frequently Bought Together
Pet Lovers Also Bought
- API Quick Start Freshwater & Saltwater Aquarium Water Treatment, 1-oz bottle$2.59Chewy Price$3.69List Price$2.46Autoship Price
- API Algaefix Algae Control Aquarium Solution, 1.25-oz bottle$4.00Chewy Price$6.09List Price$3.80Autoship Price
- API Tap Water Conditioner Aquarium Water Conditioner, 32-oz bottle$20.99Chewy Price$19.94Autoship Price
- Tetra Cleaning Bacteria Aquarium Water Care, 8-oz bottle$8.99Chewy Price$9.09List Price$8.54Autoship Price
- API Leaf Zone Freshwater Aquarium Plant Fertilizer, 8-oz bottle$9.99Chewy Price$10.29List Price$9.49Autoship Price
- API Pond Simply Clear Pond Water Clarifier, 1-gal bottle$92.99Chewy Price$130.19List Price$88.34Autoship Price
- Tetra Pond AlgaeControl Water Treatment, 101.4-oz bottle$45.01Chewy Price$65.89List Price$42.76Autoship Price
- dealAPI 5 in 1 Freshwater & Saltwater Aquarium Test Strips, 25 count$10.80Chewy Price$16.59List Price$10.26Autoship Price
- Aqueon PURE Betta Beads Aquarium Water Care, 8.8-oz bag, Blue$6.73Chewy Price$7.49List Price$6.39Autoship Price
- EcoBio-Block EcoBio-Stone with Beneficial Aquarium Bacteria, Medium$17.92Chewy Price$36.25List Price$17.02Autoship Price
- Tetra AquaSafe Aquarium Water Conditioner, 8.45-oz bottle$7.86Chewy Price$9.09List Price$7.47Autoship Price
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.

Compare Similar Items
Customer Rating | |||||
Price | $4.69Chewy Price | $5.81Chewy Price | $5.92Chewy Price | $4.09Chewy Price | $4.89Chewy Price |
Autoship | $4.46Chewy Price | $5.52Chewy Price | $5.62Chewy Price | $3.89Chewy Price | $4.65Chewy Price |
Fish Type | Tropical Freshwater, Betta, Cichlid, Goldfish, Bottom Feeder | Tropical Freshwater | Tropical Freshwater | Tropical Freshwater, Betta, Cichlid, Goldfish | Tropical Freshwater |
Aquarium Type | Freshwater | Freshwater | Freshwater | Freshwater | Freshwater |
Top Ingredients | — | Deionized Water, Aluminum Chlorohydrate, Polyelectrolytes. | — | — | — |