Fluval U Underwater Filter BioMax, Replacement Aquarium Filter Media, A495

This is just what my turtles filter needed to keep his aquarium cleaner for longer and safer for his health

Used these for my Fluval water filter in my aquatic turtles tank. Exact replacement and works great. Shipping was timely.

Ive used several different filter systems on my various aquariums. I love this underwater one the most. No constant running water. It keeps the tank clean and the filter elements last a long time.

I have a Fluval U2 filter for a 10-gallon aquarium in which I keep a Red Ear Slider turtle. I change these out once every 3-4 weeks. It works surprisingly well, Red Ear Slider turtles are dirty. One box of these has enough in it to fill my filter twice.

Biological filtering is the way to go. One of the best aspects of the Underwater U series is that they approach water cleanliness through a comprehensive approach, including BioMax. These little white nuggets work like magic for the water of my turtle tank.

Works great with the Fluval filter and helps keep the water the cleanest. The filter keeps things cleaner longer with this product.

The Fluval U Undewater Filter BioMax works as expected with my Fluval U filters. This is the largest packaging of it that I have seen, so I always buy it here on Amazon because of the price versus getting it at the local fish store. I have Amazon Prime, so I get Free 2-day shipping and I dont have to pay for shipping on my orders which is very nice. If Fluval made these in a larger package volume, I would buy that. Make sure you only remove half your bio media when you clean or make changes in your filter so to make sure you maintain a decent established bacterial content in your tank to maintain a working cycle. Dont wash or clean under the tap, or the chlorinated water will kill off the good bacteria especially on the bio- media you are keeping in the filter. Rinse with tank water if necessary. I definitely recommend these for your Fluval U Underwater Filter. They are the BioMax media that you use with the filter. You can add other things as well into the cartridge chamber like carbon, zeo-carbon or ammonia removers if you need it. Fluval has them available for sale as well, and they are available on Amazon.

Dont need it

Fits my model and works well.

Needed it