Really nice pump. Built in pressure valve is a nice feature, as is the ability to hang it on the wall behind the tank. 4 stars only because it's a bit louder than my tetra whisper pumps.
This is a nice compact little pump which works well. I would give it 5 stars but it is significantly louder than my other air pumps. The price is right and the size is perfect.
Bought 2 of these pumps & find them to be everything I want & need at a great price. Glad you sell them here, Co-op team!