rtn?

I’ve been monitoring this mushroom for about a month ive notice the top of it was turning white and I figured it was because it was bumping up against the gsp, even though im not fimilar with gsp having stinging abilities, fast forward to today its now definitely receding, i have another one on...

Hey reefers, my stony corals have been going downhill lately and I’m thinking it might be because I let my mag drop to 1120 and calc drop to 380. That wasn’t noticed until I tested today when I realized one of my acros didn’t look to hot, it looked like there was some sort of algae on it so I...