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💧 Clear water, clear mind — elevate your aquarium game effortlessly!
API ACCU-CLEAR Freshwater Aquarium Water Clarifier is a fast-acting liquid solution that clears cloudy freshwater aquarium water by clumping suspended particles for easy filtration. Designed for weekly use or as needed, it enhances filter efficiency and ensures a vibrant, healthy aquatic environment. Trusted by over 20,000 users since 2006, this 8-ounce bottle is a must-have for any freshwater fish enthusiast.



















| ASIN | B000HHLQO0 |
| Allergen Information | Apple Free |
| Best Sellers Rank | #1,612 in Pet Supplies ( See Top 100 in Pet Supplies ) #4 in Aquarium Water Treatments |
| Brand | API |
| Brand Name | API |
| Customer Reviews | 4.6 out of 5 stars 20,363 Reviews |
| Global Trade Identification Number | 00317163031117 |
| Included Components | 1 Bottle 8-Ounce |
| Item Form | Liquid |
| Item Type Name | Aquarium Water Clarifier |
| Item Weight | 10.08 ounces |
| Liquid Volume | 237 ml |
| Manufacturer | Mars Fishcare |
| Manufacturer Part Number | 111C |
| Model Number | 111C |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 317163031117 |
| Unit Count | 8 Fluid Ounces |
K**.
CRYSTAL CLEAR TANK!
I have a turtle......turtles are wonderful pets, but nasty little things. I was simply AMAZED at how quickly it got rid of al the cloudliness in the water - it is crystal clear - the Sludge product, same brand works good as well. I typically do not do reviews.....but when you find something that actually works, you need to share so other people don't waste their time and money on products that don't
M**Y
Recommended for fish lovers!
This product is necessary for keeping my aquariums and fish healthy and clear up water quality and it does the job! I will order again and again! And the price is fair as well
A**Y
It's some voodoo magic!
Can't believe how fast this worked! Setup a new 75g tank. Did not rinse off the substrate first. After filling up, tank was clearly misty and cloudy. Tank has been running for 4 days with an FX2 filter running and no change in water clarity. Received Accu-Clear. I added 2 capfull and also another cheap internal filter stuffed full of filter floss. I walked by an hour and a half later and had to do a double take. Practically crystal clear minus the tiny bit of tannin starting to release from the wood. Wow amazing! To those finding gel like clumps on their substrate. That's just how A-C works. If you have enough flow, it'll push that towards your filter to get sucked up or you could just siphon it out manually.
R**L
When one product failed Accu Clear delivered
I’ve been working on cycling a new tank for the past six weeks. After two weeks I noticed that the water had gotten very cloudy. At first, I’d hoped it was part of the cycling process but three weeks later the water is still cloudy, and the cycling process seems to have stalled out. I ordered this product but, unfortunately, there was a shipping issue and since I was eager to get this problem solved I went online and ordered a similar product. Yesterday I tried that product and after 24 hours, the water was still cloudy. Yesterday the Accu Clear I’d originally ordered arrived and since the first product hadn’t worked, I figured I was just going to return it. But this morning, I decided to give it a shot and put in the appropriate dosage. In less than an hour, my water is crystal clear. I will definitely be returning the other product and keeping the Accu Clear for future uses.
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.
D**R
Does its job, read the entire label.
Will kill your shrimp and any other sensitive fish. It says this right on the bottle so that entirely my fault but just be aware. If used with fish that don’t mind it does work well
D**A
It works
Overall the product does as it is supposed to do, This is my first ever review that I thought I needed to write because it made such a huge impact on my tank. First I would like to say no matter how lazy you are please always wash your substrate. I got about a lil over 30lbs of Seachem Black Sand Substrate in this new set up in order to keep my root feeding plants happy. I do have a couple of Kuhli loaches so the substrate was a plus as it wont scratch up their bodies and they can burrow when they want to. I made the mistake of not washing the substrate thinking I can just pour the water through a strainer so it wont disrupt the dust as much. Boy was I wrong, sure enough you can see the plumes of dust just circling around the tank as shown in the picture. I was skeptical about this product since people were saying it killed their fish thankfully I didn’t have any fish in there while I added this product so I cant tell you if it is toxic to your fish or not. However keep in mind we never truly have a full tank so under dosing it would be highly recommended. It did clear up but I was still having issues of cloudiness from the sponge in my filter and the tannins from the wood was a lil on the darker side for my plants than I’d like. So I decided to siphon out the tank as well as cleaning the filter and this time ACTUALLY cleaning the substrate until it was clear enough and the picture where its clear water but still cloudy was when I filled the tank back again and added the dosage. After the next day it was so clear although yes there was still some tannins in the water that had leeched overnight its the perfect hue for me to feel comfortable with for both my loaches and plants. It does clump up the particles like it said it was since I am running a smaller filter since I also have some otocinclus catfish that will benefit from the algae that will grow but you can just siphon up those clumps. All thats missing is for my almond leaves to come in to create that natural habitat for my kuhli loaches and have a lot of hides and places to explore. For whats its worth its inexpensive and gets the job done.
L**A
Worning worns
It doesn't matter if it will work or not; what matters is warning label on a container. It says that it can cause skin irritation, chlorthydrol, alum, chlor. Fishes and turtles will swim in this with their eyes open, and drink this water. It may work, it may not, but I will not take a risk. It seems dangers for health to me that it is dangerous for any living thing.
T**N
I got a very expency backpack
Great!
R**E
Gain de temps et d'économies
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
C**N
Purifier
Good product did what it said.
C**R
Works great
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!
S**R
As advertised.
Yeah, I mean, it works. Your mechanical media will probably get blocked, keep an eye on it so your pump doesn't run dry.
Trustpilot
3 weeks ago
1 month ago