Ista Round Bio-Sponge Aquarium Filter (Large) Airline Tubing & Accessories Primary use: Fish stress reduction

Primary use: Fish stress reduction and injury support

Rounded blade corners help protect silicone seams during cleaning

Occasionally blowing the colony with a baster or powerhead will help clear detritus from between the polyps and discourage nuisance algae

Intricate dark squiggles and spots cover its belly and face

Ista Round Bio-Sponge Aquarium Filter (Large) Airline Tubing & Accessories Primary use: Fish stress reductionIsta Round Bio Sponge Aquarium Filter (Large) Broad Biological Filtration with the Ista I 146 The Ista Round Bio Sponge Aquarium Filter (Large) combines a broad sponge surface with a low profile weighted base for dependable mechanical and biological filtration. Its air driven operation draws aquarium water through the porous foam while rising bubbles improve circulation and help promote oxygen exchange. The larger round sponge provides increased