The compressor delivers strong, steady performance with built-in overheat protection and a security valve for added peace of mind. Pair it with your own diffuser and air tubing (not included) to create a full underwater aeration system suitable for ponds up to 3 acres. It boosts dissolved oxygen, reduces algae growth and sludge buildup, improves water quality, and helps lower fish mortality. | Vevor | | Pond Aerator,5.2CFM 3/4 HP Air Compressor,Lake Aerator for Ponds up to 3 Acres,Overheat Protection & Anti-Backflow Valve | Silver;Black | Best Buy