AQUANEAT 6Pack PreFilter Sponge for Aquarium Shrimp Fry Fish Tank Filter 1 Intake Replacement Foam Cover

Dimension 10x55cm39 x22 the inside hole diameter is 25cm1 for a snug fit check the size you need carefully before placing an order The sponges inner diameter accommodates filter intake within 11134 inches 2834 mm due to its elastic properties Lifesaver Keeps baby fish shrimp and snails from getting sucked into hob filters power heads or canister filters by simply putting a pc of this prefilter sponge over the intake Improve Filtration Does a good job in catching flake fish foods plants and any other large particles floating in the water keeping the tank cleaner and last longer between cleanings Maintenance Rinse the sponge roll periodically based on the bio load of your aquarium tank The material holds up well to being rinsed and reused and allows great water flow Includes 6 pcs of prefilter sponge Note The hole doesnt go all the way through the sponge They come flattened in a vacuum bag just unpack and rinse them and these sponge filters will puff up to normal shape and size.