Gravel cleaner for aquariums with 20-45cm in height.Key Features: ‚Ä¢ Siphons metabolites, food and plant remains (sludge) from the aquarium bottom. Convenient: with automatic suction device. ‚Ä¢ Easy installation: connect the hose to the gravel cleaner, attach the hose with stopcock to the bucket, insert the cleaner - activate with shaking movements. Push the gravel cleaner into the ground, water suction siphons the debris. ‚Ä¢ Automatic suction device (no priming by mouth required), cleans places which are difficult to reach: round cross section with "corner", cleaning claw to adjust suction strength, internal diameter 40mm. ‚Ä¢ Protective sieve to prevent plants and fish from being sucked in.