

💦 Clear water, clear mind — make your aquarium the envy of every fish lover!
API ACCU-CLEAR Freshwater Aquarium Water Clarifier is a fast-acting, fish-safe treatment that clears cloudy freshwater aquarium water by clumping suspended particles for easy removal by filters. Designed for weekly use or spot treatments, it enhances filter efficiency and restores crystal-clear water within hours, backed by API’s 50+ years of trusted aquatic care expertise.













| ASIN | B0002568NG |
| ASIN | B0002568NG |
| Best Sellers Rank | #1,634 in Pet Supplies ( See Top 100 in Pet Supplies ) #4 in Aquarium Water Treatments |
| Brand Name | API |
| Color | multi |
| Country of Origin | United States |
| Customer Reviews | 4.6 4.6 out of 5 stars (19,360) |
| Date First Available | June 20, 2004 |
| Date First Available | June 20, 2004 |
| Department | Unisex-Adult |
| Department | Unisex-Adult |
| Directions | 1 ml. per 10 gallons of aquarium water. Water will clear within several hours. If second dose is necessary, wait 24 Helps cloudy water fast. Safe for use with all fish and plants. Treats 370 U.S. freshwater. Accu-Clear freshwater conditioner causes tiny particles to clump together, forming larger that are removed by the filter. |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 6 x 3 x 12 inches |
| Item Package Dimensions L x W x H | 6.06 x 1.46 x 1.42 inches |
| Item Weight | 136.08 Grams |
| Item model number | 111B |
| Item model number | 111B |
| Manufacturer | Mars Fishcare |
| Manufacturer | Mars Fishcare |
| Material | Plastic |
| Model Name | ACCU-CLEAR 4 OZ |
| Number of Items | 72 |
| Product Dimensions | 6 x 3 x 12 inches; 4.8 ounces |
| Size | 4-Ounce |
| Style | Aquarium Treatment |
| Target Audience Keyword | fish |
O**E
Buy it, It WORKS, from an amateur
I’m new to the fish tank world. I was gifted this 30gal tank, I slowly purchase accessories, decorative item. Got the water tested after 3 week for free at local store. Water became cloudy and dark, because I was constantly moving decor around and removing some fish. These guys are fast and elusive. Anyway, I thought I needed to change out the water. I purchase this ACCU-Clear, I follow the instructions 2ml to every 10gal of water. So, I measure out 6mil. The measuring cap show 5 and 10ml, went a little over 5. Reading the reviews, I was expecting dead fishes in the morning. 1st dose show some improvement after 24hrs. I added 6mil the next day, getting better, 3rd day another 6mil. Now the tank is crystal clear and the fishes are still alive and all over the place. Now, someone offer me a 50gal, I wait until at least 6 months, before I even start to think about upgrading. I would definitely recommend this, go slow and follow instructions, wait 24hrs, before u treat the again. This thing WORKS, for this amateur.
K**R
Awesome Aquarium Cleaner!
This is an honest review of API ACCU-CLEAR made for freshwater aquariums that I use in my aquarium weekly. Pros: Accu-Clear is a must-have product for any aquarium owner, as it works wonders in creating water clarity in your aquarium. I use it in mine once per week. Just a simple amount about the size of a nickel can significantly improve water clarity and remove any green coloring. Opportunities: None. This is a great product at a good price point that is also in a supply amount that will last a very long time. Overall, ACCU-CLEAR makes cleaning and maintaining my aquarium a breeze. It is fish safe and a great product for algae control.
A**E
Clears Your Tank Up Fast! Ecellent Product!
This product is amazing. It clears your tank up fast. I had to restart my cycled tank from a year ago because everything got sick. So I started a new tank and got a bacteria bloom. It was the worst I have ever gotten. I had to take everything out of the tank for a bit becuase it was making them sick!. Then I put them back in and finally it started to clear. But the water wasn't clearing up fully. I bought this to help. I put in half of the recommened dose for the first day to not overwhelmed my tank. It cleared it up very well. Then the next day the rest of the dose and BOOM my tank is CRYSTAL CLEAR! I foyu're tank isn't clearing I haighly recommed this product. Follow the directions and use it sparingly so you don't kill your tank though. It's a fantsic product! And it came in less than 24 hours!
D**E
Nice
Works well but it can be difficult to get the right amount because the measurements in the cap are very hard to see.
L**N
Works
My tank water kept getting cloudy for seemingly no reason, this stuff works great. The first time I used it the water didn’t clear much, but I used it again and it’s very clear now.
I**A
Best fresh water tank clarifier
API ACCU-CLEAR Freshwater Aquarium Water Clarifier, is the best product for your fish. No issues with its use with any freshwater fish, and clears the tank of floating particulates.
S**N
accu clear
API ACCU-CLEAR alway works good
A**X
Would not recommend if your cloudiness is caused by a bacteria bloom
From what I’ve seen this product works great if your cloudiness is from dust, debris, and maybe a light haze from bacteria or whatever. How this works is it acts as a binding agent to particles in the water and clumps them together so it is easier for your filter media to catch it, or it sinks to the bottom in clumps which can be vacuumed out. I however used this when I had an EXTREME bacteria bloom. I could not see 2 inches past the glass. I used the proper dosage and it bonded up so much bacteria that it created long slime trails that got stuck all over my driftwood, in my plants, and a pain to remove from my grass carpet, as giant clumps of bacteria attached themselves to it. On top of that since I just had such a high amount of bacteria it clogged up my filter within minutes. Again this works great as a water polisher and removing dust and light haziness. If you have a bloom like mine where your water nearly looks solid grey, it is too far gone for this product to fix. You are better off changing out polishing filter pads daily and letting it dissipate on its own what getting bacteria clumps all over substrate, plants, glass, and filter.
T**N
Great!
R**E
Avant sur un aquarium de 800l, les espaces de nettoyages étaient de 15 jours voir 3 semaines maxi, depuis que j'ai découvert cet article, mes nettoyages sont aujourd'hui espacés d'un mois et l'eau est toujours limpide pendant toute cette période. Aucun problème sur les poissons et les plantes
T**.
SuperFast Delivery, Quality Product
C**R
The first 2 days after putting it in our 35 hex, it was cloudy as heck. But then we woke up to the clearest tank ever. I changed the filter, which was new when we put in the clarifier, and it was filthy! I guess it did a great job!
M**O
Ottimo prodotto, l'ho utilizzato in un nano acquario e dopo 24 ore, l'acqua è diventata cristallina, peccato soltanto che trovare prodotti dell'API in Italia sia molto difficoltoso.
Trustpilot
1 month ago
5 days ago