Things in my tank are not looking all that well as of late. My mushrooms are continuing to decline, but not all, just certain colors. The only parameter that I'm not testing for is Alk and all the others are perfectly within acceptable limits. My button polyps are also doing fine. My PH has been a rock solid 8.2ish and I have nice corraline coverage so I never thought I had an alk problem, but regardless could this be a possible cause? I'd like to add a bubble coral as the tank has been up for a little over 4 months, but i'm not about to put a coral into my tank if there is any chance of harm to it. Tanks all!