COOL SUMMER --- Our product can reduce the temperature of the water in your pool by 4 or 5 degrees if you run it during the night ADJUSTABLE --- There is an adjustable water valve on the product that increases the water pressure when the water valve is fully closed, allowing the water to be sprayed higher DUAL HEAD POOL WATER FUN FOUNTAIN --- Innovative Dual Fountain can integrated 2 waterfalls spraying from 1 pool outlet, splash double water volume into air, fast cool down your pool,Also can be hidden underwater when not in use As easy as replacing a directional inlet fitting, you can rotate the switch for controling the water output to get a great waterflow and your families to enjoy and the soothing sound of water. Tips: This product can be used without a pump, but the water height be low. If you hope you can get a better fountain effect as in the product picture, please use a high power pump.(without pipe adapter)