ReefWave®Silent - Smart - PowerfulBased on Gyre patented, cross-flow technology, ReefWave® smart pumps are nearly silent, smart, powerful and easy to maintain. They provide an optimal REEF-SPEC® water flow for corals in a wide range of reefscapes, regardless of their position in your aquarium. The combination of an advanced, smooth running and energy efficient sine-wave motor drive, with superior vibration damping mounts and dual bearings on all models, make ReefWave a nearly silent pulsing wave pump. You can control each ReefWave pump locally through its own dedicated controller or remotely via the built-in Wi-Fi that connects easily to Red Sea™s ReefBeat app. Features Cross-flow technology wave pump for a gentle, evenly distributed flowSilent and energy efficient Sine-Wave DC control motor5 programmable wave patterns with unique Forward/Reverse/Alternating flow modesEasy assembly/disassembly for maintenanceDedicated Wi-Fi controller for each pumpSynchronize multiple pumps of different sizesReefBeat App for easy set-up, operation, monitoring and notifications ReefWave 25 specifications 1980 max GPH4-25 Watts15mm max glass thickness ReefWave 45 specifications 3960 max GPH8-45 Watts20mm max glass thickness More specs here