The Fluval Edge Gravel Cleaner is an effective tool for removing debris and waste matter from your aquarium substrate. It features a contoured design for angled reach, an easy-start valve which eliminates the need for mouth-priming, and an exclusive gravel guard to prevent tube blockages. Also includes 2 cleaning head attachments (one for a deep clean, and the other for easy access to hard to reach areas). 13 Inches.