Fluval U4 Poly/Clearmax Filter Cartridge
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About This Item
- Helps control green water and unsightly algae growth for a clear, beautiful tank.
- Chemical filter media helps to absorb and trap phosphate, nitrite and nitrate.
- Encourages crystal clear water, helps to reduce odors and encourages the ideal conditions for fish and plants.
- Helps to reduce overall aquarium maintenance, so you can enjoy your tank more and worry about it less.
- Convenient two-pack gives you one cartridge for now, and one for later.
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Questions & Answers
1 Customer Questions
ReviewsWrite a Review
6 Customer Reviews
weird red brownish stuff on new items
Why did my cartridge arrive with this red tint to it???? So confused
Love these filters
I have always paid more and got the filter for algae but reading the reviews I decided to get the plain filters to save money, big mistake, within a couple of days our tank was a mess with algae and discoloration and odor I never had that problem with these filters I recommend them 100%, I have a very large red earred slider and it is hard to keep his tank clear, but not with these filters I will never buy the plain filters again these get the job done!
these do not work
The carbon filter cartridges work. These do not. I can do a 60% water replacement and the water is murky and filled with fine particulates the day after installing these with new sponges. The carbon filters work. These do not.
This product does it's job well and my tank benefits from it.
Good product and I like ordering from chewy. Good prices and fast delivery.
To be fair I thought I was ordering the carbon filters, but didn't pay close enough attention. However, I gave these a try and found them to be next to useless. The water is consistently cloudy. The description says they will collect fine particulates, but this is simply not true. I absolutely love my filter and other filter pads that are available, but will never order these again. Blessedly this was an inexpensive mistake.