Penn-plax  Gravel Vac  GVX CLEANER AND SIPHON: designed to remove grungy waste, dirt layers, and debris from your tank PERFECT FOR ROUTINE MAINTENANCE: it's self-starting siphon is easy to use and produces great results LEAVES GRAVEL AT THE BOTTOM: you can clean above and below your gravel line without fear of scratching EXTENDABLE: the tube extends from 9 to 16 inches, so this Gravel Vac is perfect for reaching every spot in your aquarium SHOP PENN PLAX FOR ALL YOUR PETS NEEDS: Penn Plax is a manufacturer and distributer of top pet supplies, who specialize in creating excellent pet products for animals both great and small