Prevents ailrflow from reversing during a power or pump failure.This could drain aquarium,killing fish and damaging pump or carpet.
Use on all aquariums where pump is below the water surface.
3PCS/BAG
Prevents ailrflow from reversing during a power or pump failure.This could drain aquarium,killing fish and damaging pump or carpet.
Use on all aquariums where pump is below the water surface.
3PCS/BAG