The Prime Gravel Cleaner Range Is Designed For Easy Cleaning Ofaquarium Gravel. The Easy Start Priming Action Ensures The Gravel Cleaner Is Easy Touse Every Time. All Three Sizes Have A Wide Inlet Foot Ensuringefficient Gravel Cleaning And Enables Hard To Reach Places In Theaquarium To Be Cleaned With Ease. Each Gravel Cleaner Comes Completewith Siphon Hose.