Ideal Replacement Filter Pads: Size: 2.8" L x 1.2" W x 0.95" H. The black filter pads are perfectly compatible with Pawfly 3-10 Gallon Internal Aquarium Filter. Perfect replacement for the worn filter sponges.

Mechanical Filtration: All the filter media pads can effectively trap debris, food residue, wastes or other impurities in water. Prevent them from entering the aquarium to keep water clean.

Fine Sponge Filtration: With large contact area with water, the black filter media sponges are helpful for the accumulation of beneficial elements. Provide biological filtration to fully remove excess harmful substances.

Reliable Material: The bio sponges are made of soft and foldable foam with high elasticity and fine air and water permeability. No worry about sucking up your fish. And they won’t block the normal water flow due to the fluffy inner structure.

Easy to Use: Before use, rinse it with cool water to remove the outside dust, then fully put it into the filter chamber. Replace it every 2 to 4 weeks to maintain a healthy water environment. (Please unpack and let it stand for 24-48 hours or soak in water before use for best results.)