Review on 🐠 Efficiently Oxygenate Aquariums and Hydroponic Systems with PONDFORSE Air Pump: Adjustable Flow Control, 475GPH Power, 20W 30L/min by Vanesa Williams

The best 20 watt pump. Very quiet compared to other pumps. I've had mine for a few months now and they've been running since they arrived at my house. They get a little warm but not hot, and you can adjust the pump output with the power cord (instead of just being able to adjust the airflow valve like most other pumps?). I mainly use them to aerate small DWC hydro setups. You can run two 5 gallon buckets of DWC with one pump (in theory you should have at least 1 watt per gallon container, but I don't think using 4 buckets with one pump will provide adequate aeration). I read that some reviews have a hose from the pump, but I haven't had such a problem. The pump comes with a small hose clamp to keep the hose in place.