Intake sponges are designed to cover the intake on hang on back filters and canister filters. This sponge can be used with Aquaclear, Aqueon, and other hang on back filters.
Intake hole: 1 inch
Diameter: 3 ¾ inch
Length: 6 inch
Benefits:
Makes almost all filters fry safe, preventing them from being sucked into the filter
First stage (pre-filter filtration), prevents fish waste from getting into the filter media