Hi I'm still new to saltwater and am having a few problems with my setup. Im hoping sombody can give me some friendly advice. Lol I'll try to make this short. I have a small nano tank that I've had running for a while now and about a month ago my corals started to shrink and not open as much and now they barely ever open. I thought it was my lighting so I just upgraded to a par38 led and it's been on the tank for 3 days. But now the tank is full of bubbles, there all over the rock the pump and back wall. The rock just keeps bubbling, i did a water change yesterday and everything is good but my corals are still not looking good and more bubbles. is this normal? will it go away? Or what should I do? Thanks