All the filter media pads can effectively trap debris, food residue, wastes or other impurities in water. Prevent them from entering the aquarium to keep water clean
Safe for fish: excellent for small size fish like dwarf cichlid, guppy, killifish etc., or for hatcheries, maternity tanks, and fry tanks, as the filter produces minimal current and has almost no way to suck the fish through the filter
Sink in water before using due to vacuum sealed
Dimension：3 inches in radius; Includes: 6pcs replacement sponge
