Aloha all, Here's what happened. I went away for a few days and a friend of mine who is a newbie reefer as well was taking care of my tank. Just before I left, I noticed a small area of red cyno forming in one spot of my tank so I was going to take care of it when I got home but my friend decided to try and do me a favor. I am not into adding anything into my tank that I can't test for but he is of a different school so he added red slime to the tank but now my skimmer is just going crazy with microbubbles coming out. The cup overflows within a few minutes of being turned on, skimmer is a H&S. It has been a couple of days now and it is still doing this, why? What is the fix?