Hello I am hoping someone can assist as I am new to all this. My son has had a hex 65 gal aquarium with an undergravel filter. I recently just cleaned it entirely as it had not been cleaned in some time and my son moved away. The Power heads that he had on top were not functioning that well. So I replaced them. What I want to know is this the proper set up? It has the two tubes coming from the under ground tray. And we had two power heads on top of each tube. Should I be using Air filters as opposed to power heads? Do I have to have airstones and inner tubes? Sorry as I am new and a little confused. Any insight is very appreciated.
Thanks