Ista Bio-Sponge Filter Material System - LARGE / SHORT - Biological Filtration Invertebrate Accessories 1 ball of Pond Shock

1 ball of Pond Shock will treat a 2500 gallon pond for 1 month

No artificial colors or color sealers

even lighting that enhances the natural beauty of your aquarium while helping you clearly view your fish

That will keep the clip in place

Ista Bio-Sponge Filter Material System - LARGE / SHORT - Biological Filtration Invertebrate Accessories 1 ball of Pond ShockA sponge filter uses the pressure caused by bubbles of air from an external air pump, or a water pump to draw water through the sponge. As water is drawn through the lift tube or pump, it is replaced by water entering the sponge. The surface of all the bubbles or pockets in the sponge provides a bed for the beneficial bacteria of a biological filter. The bacteria help to break down harmful waste (ammonia and nitrite). Mechanical filtration: Provides