martiniduck
Aquarium Advice Activist
I have a 29 gallon tank with an under gravel filter. I use two airstones one in each lift tube. I have each stone attached to each outlet on a Whisper model 60 air pump. Lots of bubbles, maybe overkill. My question is would I be better off with a couple of power heads? or would I be wasting my money? I also have a Penguin 150 biofilter external filter rated for a 30 gallon tank.