Fluval U3 Underwater Filter Poly/Carbon

It works well with the rest of the system. Didnt realize how dirty these tanks get.

Direct replacement. We clean them 3 or 4 times then we replace them with these. Makes cleaning the tank and filter a lot faster.

Keeps my tank Super clean

Keeps my turtle tank clean.

Makes my fish tank nice and clean

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.

Great price for replacement filters for my U3 Fuval underwater aquarium.

Good. Buy it for your fish and they will be happy. Good for filter too. Put 2 pads together for better filtering

Item installed easy and works great.

The older model fluval is way better. Terrible product. Very disappointed. This filter is recommended for a 40 gallon filter. It could barely filter 10 gallons of water before I have to change and clean the tank in less than two weeks. Wouldnt recommend this product to anybody.