The Aquarium Coop Coarse Sponge Filter is one of the best sponge filters available on the market. Designed with the hobbyist in mind, these filters will keep your tank healthy and stable. The surface area on a sponge provides exponential surface area for the beneficial bacteria that form the backbone of our aquaruims.
These Aquarium Coop Coarse Sponge filters are perfect to have on hand for hospital tanks too. Keep them in your tank or sump to keep them cycled for when you are in a bind and need to set up a quarantine or hosptial tank in a pinch!
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