I've just about had it with this filter! Paid like $140 for it and I have an almost constant bursts of microbubbles! Then sometimes it runs great and just when I think it's great again the bubbles start! I've tried redoing all the connections and same result. Marineland . Com is no help. I just saw some where to coat all the connections in Vaseline? Would that help? My other idea is to sell this on the bay and buy an odyssea 500gph canister. Seem to have good reviews. What would you do?