Review on 🐠 Hygger Quiet Magnetic Wave Maker for Aquarium - 1600GPH & 2600GPH Powerhead with Digital LED Display Controller - Submersible Water Circulation Pump for Fish Tank 3-55 Gallon by Keely Allred

Make sure you read and understand the instructions well. Each digit controls a specific function. Once you understand this, it will be very easy to change functions. The second digit is the power generated by the shaft generator. I set it to 4 and it blows all the nasty stuff out of the live rocks in my 20g JBJ Cube. That's what I bought it for. Each day I moved the powerhead to a different location to shake out the debris from under the live rocks and change the filter floss. I see my tank getting cleaner every few days. Well, if there's a way to add a Y-strap to add another pump, that sweetens the deal! I will update over the months.