ATI Hydro Sponge Filter #1 Bulk with New Gravel Base slim filter carbon cartridge The Replacement Filter Cartridge Set

The Replacement Filter Cartridge Set of 4 for the BioStyle 20

Provide the building blocks of protein to encourage the formation of new tissue

Valve Assembly

It features sturdy materials including bottom injection molded and miter-cut top frames in order to accommodate the metal mesh sliding screen top

ATI Hydro Sponge Filter #1 Bulk with New Gravel Base slim filter carbon cartridge The Replacement Filter Cartridge SetThe ATI sponge filters are excellent biological as well mechanical filters that only need a source of air to operate. They are excellent for fry tanks because they won't suck up your babies! For aquariums up to 10 gallons. Sponge size 2 x 3. 75 Inches. Comes with 5 inch lift tube. Bulk sponge filters are the same as the ones in the box without the packaging! Hydro Sponge filters stand tall over the competition with superior construction, quality