So I went away for 3 day swim meet and left the care of my new xenia, galaxia, leather, and devil's hand in the care of my mum. Prior to leaving they'd been quite happy and all were open completely during the day. The galaxia was receding a bit and some of the skeleton was exposed, but I'd hoped to nurse it back to full health. I got back home today however, and much to my dismay The xenia were all partly closed, the one leather was more closed then anything I'd ever seen (it looked like a little ball of tiny grapes), the devil's hand was not sticking it's little flowery looking polyps out (or whatever you call them), and the galaxia had receded at an alarming rate leaving a lot of the skeleton exposed!!! I immediately checked all the water parameters and couldn't find anything out of wack. Nitrates, nitrites, and ammonia were all at 0 ppm. Salinity was getting a bit higher then usual so I topped off with a bit of fresh and brought it down to 1.025. Also in the tank are 3 huge green mushrooms that are doing great. 1 red mushroom also doing wonderfully. A medium sized colony of green button polyps, all wide open and budding like crazy. A medium sized colony of palys, also completely open and doing fine. 2 firefish gobys, a clown fish, a pair of peppermint shrimp, a sand-sifting star, and 2 emerald crabs. there is some green algae growing on the rocks, but that's what the merald cabs are for, and they're slowly but surely getting rid of it. I'll post pictures of distressed corals so that my plight can be better understood. I'm also running a MSX 200 Extreme Skimmer, Nova Extreme Pro T5s, and temp is 79-80. If anyone knows what's going on, PLEASE, let me know, I'm really worried as I'm relatively new to the hobby and don't want these corals I just got to die. Thanks!!!