Smart Controllable Wave Maker:with smart digital display and adjust knob controller with multiple mode ,can set pluse wave mode, steady strem flow mode,10 minutes feed mode,master and slave control,ideal for coral reef tanks; Compact size and powerful wavemaker ,20W,3400GPH max flow ,powerheads for saltwater aquariums and freshwater .fit for the 100 to 200 gallon tanks; Safe DC24V 20W powerhead:DC24V working voltage ,safe for you and your fish,external control,no drive inside of the pump ,longer life; Super Quiet aquarium wavemaker pump,SINE wave control tech,noise level less than 25db;comes with a protect foam guard prevent things and fish sucked from the rear of the fan; Stong Magnetic Mounting wave pump,use magnetic mounting,covered with rubber ,tank thickness up to 15mm,wide flow range; JEREPET 3400GPH Aquarium Wavemaker Pump With Controller,20W DC24V Quiet Powerhead with Magnetic Mounting for 100 to 200 gallons Fish Tank