Premium quality and longevity. Quiet, energy efficient, oil/ lubrication free, outdoor UL rated Aeration for ponds up to 1.5 acres at 10' or less in depth. Helps keep water clean and clear. Promotes healthy oxygen levels for fish to thrive and grow. Circulates water - evenly distributing oxygen and water temperature. Helps prevent fish kill in the winter. Can be rebuilt 2 times for the fraction of the cost of a new aerator. See HIBLOW's website - support page for a video tutorial Hose connector included: 5/8" ID to 1" ID Stepped Straight Hose with clamp. Barb fitting size 1" OD (barb not included) Pond aeration tubing recommendations: Distances between 50-100' use 1/2" ID tubing. 100'+ use 3/4" ID tubing Use a medium bubble diffuser (3-5mm bubbles) for best results and aerator life The Hiblow HP-150 is a compatible replacement for the Gast SPP-150, Thomas 5150, and many other 150 LPM air pumps. The Hiblow HP-150 is commonly used on many 1000 GPD systems. This unit is brand new.