surface

Hi all, I started on the minimal side with rock and have slowly been adding to fill in here and there... my question is how close to the surface do you have rock? Thanks!

Hi All, Let me pre-apologize if this has been addressed before, but I am having difficulty finding a solution to my specific problem. The threads that come up in my search typically are for microbubbles coming from the sump. This is NOT my dilemma though, hope you can help. Setup: Running a...