This pool warmer captures sunlight efficiently through black coil and transparent dome cover, elevating your pools temperature by 3-4. Setup is a breeze with the included installation kit: 1 flat gasket, 1 threaded nut hose, 1 sealing tape, 1 short hose, 1 long hose, 2 hose clamps and 2 hose reducers. Flexible installation options are provided by 90 rotatable hose connectors, allowing for connection of up to 3 heaters for larger pools, best paired with a 1-2HP power pump (not included) for optimal flow. Plus, the smart design features foldable and wider legs for easy angle adjustment and compact storage, enhancing stability and convenience. Note: We recommend using this solar water heater with a 1-2HP power pump that has a flow rate of up to 16 gallons per minute. 1)When using the heater, ensure the pressure does not exceed 0.8 kPa, with a daily air pressure of 35 PSI. Costway Solar Pool Heater Above Ground/In Ground Swimming Pool Dorm Heater in Black