As the world’s best-selling performance canister filter, the 7th generation 07 series features Fluval’s eTEC (Efficient Technology) state-of-the-art materials and design refinements which make them ultra-quiet, powerful, energy efficient and user friendly for aquariums 10 to 100 US Gal. (40-500 L). https://www.maplepets.in/product/307-performance-canister-filter-up-to-70-us-gal-330-l/