Hey everyone, I am pretty new to the hobby (I've had only 1 nano tank before this one) and started a 10 gallon nano about a month and a half ago. I started stocking it with just several shrimp and a sun coral (I now have a fish, hermit crabs, and a small clam). I added a frag of zoas a month ago and they did fine for a week or so but after the first week they wouldn't open and eventually shrunk and died completely. Its been 2 or 3 weeks since they died and I'd like to try adding more corals but want to find the possible problem first. It might be my pH (about 7.8) because its a little low plus at that time I had trouble keeping the temperature down so the pH probably dropped lower even. Everything else tested fine...What do you guys think???