AquaClear Powerhead 30 – 110 V, 175 Gallons per Hour

**I did not get the model shown in the picture with the easy-to-find green power adjustment located mid-powerhead. Be aware that while the functionality, flow rate, etc may be the same, you may get the slightly older model – on the plus side, my model has all black pieces and disappears more easily without the yellow and green pieces**This item works great. Much better than the Penguin version I had previously (the impeller started making a horrible noise a week into using it). I use this as a Co2 injector/disperser and it puts out tiny little bubbles and creates a nice gentle current. The adjustable flow rate is great so that I don’t blast my plants with water. I also like that the flex tubing intake is slightly oval shaped meaning that your airline is more difficult to put in but doesn’t fall out constantly.The deflector piece is a bit flimsy and not as adjustable/aim-able as the penguin. You can point it up or down but the Penguin allowed you to adjust it left, right, up, or down without turning the bottom piece. The switch to adjust the flow rate is located at the bottom of the head and can be a bit of a pain to get at if you like to constantly adjust the flow rate. While not really necessary, it would be great if the powerhead locked in to the suction cup attachment rather than slide in. While cleaning the tank we have accidentally knocked the powerhead out and it has fallen to the bottom.