Aquascape SLD adjustable flow pond pumps are professional-grade, asynchronous, solids-handling pumps ideal for use in ponds, Pondless® waterfalls and other water feature applications. SLD adjustable flow pond pumps provide superior reliability and solids-handling capability. The included smart control receiver makes it easy-to-connect to the smart control app on your smartphone or tablet, allowing for a variety of wireless control functions, including flow adjustment and customized scheduling.