The 90° Bottom Draw Adapters allow your pump to draw water down close to the bottom of your hydroponic system or reservoir while using a standard submersible pump. The 1" diameter adapter is compatible with EcoPlus 633, 1056 and 1267 pumps. This adapter will draw water down to less than 1" in the bottom of your reservoir or tank. Quickly turn your front draw EcoPlus pump into a "bottom" draw pump with a Bottom Draw Pump Adapter.