Pawfly 6 Pack Pre-Filter Sponge, Aquarium Filter Sponge 0.8" Intake Sponge Foam Roll for Small Fish Shrimp Fry Fish Tank Covers Accessories

Single-Hole Sponge: Size 3.4"" L x 2"" D; Hole Diameter: 0.83"". These foams are perfect replacement for pre-filter sponges. Must-have accessories for fish tank filters.. Life Saver for Fish: The replacement foam cover can be easily attached to the water inlet of the fish tank filter. Effectively prevent shrimp, fish fry or weaker inhabitants from being sucked into the filter.. Mechanical Filtration: The intake sponge filters can effectively trap debris, food residue, wastes, plants or other impurities in water. Prevent them from entering the filter to maintain a healthy water environment.. High-Density Sponge: The pre-filter sponges are made of soft and safe foam with high elasticity. And they won't block the normal water flow due to the fluffy inner structure.. Easy to Install: Simply replace the sponge with a new one. An essential replacement foam for the water inlet cover of a pre-filter. Ideal for freshwater and marine aquariums.