Petworx Gravel Cleaner 20in - Extra Large Marine Lighting API Aquarium Treatment Supplies are

API Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae

It may be used in a canister filter

Unlike terrestrial animals

The foam slides out easily for quick cleaning

Ideal for use in 150 to 265 L fresh or marine aquariums

Petworx Gravel Cleaner 20in - Extra Large Marine Lighting API Aquarium Treatment Supplies arePetworx Aquarium Gravel Cleaner 20" Instructions: Put the pipe with suction head into tank Put the other end of the plastic tubing into a bucket Shake the pipe with the suction head up and down until the water expels out automatically Move the head following the effective slant angle and agitate the sand gravel Dirt will be sucked out with the water into the bucket