Scott Aerator Bubble Pro Max XL Sub Surface Aerator Voltage:115v high density polyurethane and stainless steel construction ensures high density polyurethane and stainless steel construction ensures longevity and reliability EasyPro Pro Series Medium Pond Kit 11' x 16' [EM1116FB] The aerator is designed with a GFCI (Ground Fault Circuit Interrupter) requirement to enhance safety Coverage area 1 acre at 5 to 8 foot pond depth Coverage area 2 acres at 9 to 12 foot pond depth Coverage area 4 acres at 13 to 16 foot pond depth Compressor power 3 4 hp Tubing length Four lengths of 100 foot Voltage Available for 230 volt power (optional) Warranty Two years Power supply requirement GFCI required