ATI Hydro Sponge Pro Filter #4 Bulk with New Gravel Base penguin refillable Tank includes an acrylic tank

Tank includes an acrylic tank with an anti-jump lid

Planted aquariums require approximately 5 mg/L of nitrate as a source of nitrogen for healthy plant growth

Eliminates osmotic shock

Easy-to-adjust temperature dial sets temperature 1ºF with every click

ATI Hydro Sponge Pro Filter #4 Bulk with New Gravel Base penguin refillable Tank includes an acrylic tankThe all new pro series has reticulated sponge for higher flow rates when using a power head without clogging. Great for breeders and hatcheries and heavily saturated tanks. The 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 80 gallons. Sponge size 4 x 4. 75 Inches Comes with 5 inch lift tube.