Pyramid_Party;3864913; said:Yes cause they can clog them up and cause problems.
DDFishPets;3867838; said:Depending on the snail size, the shell of some them might get jammed in the impeller.
Try running some copper solution through the filter (while its disconnected from the tank) and that should solve the problem. Just make sure you give your filter a good rinse after to get rid of any dead snails and residue from any copper solutions for killing snails.
dpk2313;3867845; said:yes its not good they can kill your impeller especially trumpet snails they can and will ruin pumps and filters you can kill them with coppersafe