Adjustable DC Wave Maker in 6 different modes. Each wave pump comes with four pre-set wave modes: Classic Wave, Nutrient Transmission Wave, Constant Stream, and Random Wave. 10-level of flow rate/intensity adjustment for different tank sizes. Pump angle is also adjustable. The smart controller offers a full range of customizable features: wave patterns, speeds, frequencies and timer.Ultra-quiet, less than 20dB.Flow Rate: 16000L/H