Peoples, I just set up my 90 gal Oceanic bow front, got the sump, skimmer, pump, the overflow (that came on my tank) and I put it all together and I am having these micro bubbles coming from the return back into the tank, I have never ran a tank that needed a wet dry so I am not sure if I did something wrong or if this is going to be a normal thing. The tank has been running 2 days now. A little bit about it, its the 90 gal Oceanic bow front, with built in overflow. I added a regular sump and a pump, vortek power head, and marineland skimmer. I have 3 bags of Indo Pacific sand and nothing else as of yet so it will cycle and settle first. Am I doing something wrong for the return to continuously blow these clouds of bubbles through out the tank?