bubbles from powerhead I have a submerged powerhead used just to move the water around the tank, why would it occasionally throw out random bits of bubbles? I think I read somewhere, it has to do with the chemistry. Some of my bubbles were from my skimmer but that was taken care of by a bubble trap...help  _________ 40g display, 15g sump, 10g fuge, coralife super skimmer, 40lbs seaflor special, 5lbs sugar fine LS, 25lbs LR(fiji, and gulf of mexico) 265watt PC with 2 50/50 10k/6.7k daylight, 2 50/50 420nm/460nm actinic, DIY moonlites, DIY auto top off, 32g reserve RO/DI, DIY dosers, research... |