So I added 4 coral frags in the tank yesterday, attached them to the rock using d and d aqua scape epoxy. I used what I had left over to secure a couple of rocks together. Since then my skimmer, a deltec mce 600 has gone a bit mad. It has twice filled the cup up and started flowing down the overflow. I have now turned the air down some 70% but it's putting in tonnes of bubbles into the aquarium. Is this normal, hopefully it will calm down and resolve soon.
