Jebao SOW-4 SOW-8 SOW-15 SOW-20 Aquarium Wavemaker with Controller for Marine Reef Sine Wave Propeller Pump Fish Tank Powerhead

These are much better built then the sw4 that fell apart on me after 6 months. Lets see what's happens. 3 stars as the warranty with this company means nothing.

Second purchase. Don't be alarmed if at first it's noisy, they go very quiet after a few hours in water. Tip - DO NOT test dry. Had first pump for overv two years but my fault it broke...got water in box when cleaning filter.