For context, I'm currently about 2 months in cycling my 120 mixed/lps reef. There is so far no livestock whatsoever, but the clean up crew will hopefully arrive soon. Anyway, there have been micro air bubbles coming out of the return. This has been present for the entire cycle and is an asthetic problem, but I would really like to stop this because it's causing my tanks water to be cloudy and un-appealing. The tank is an aqueon reef-ready 120, the sump is an alpha fuge 200, and I'm not sure what the pump is but I think it's a syncra.