I have had my NC 24 for 6 months and do weekly water changes--I have a mixture of mushrooms, rics, leathers, GSP, Xenia, zoas, and a few LPS(trachy brain, candy canes, acans, and blastos)--The last week or so the shrooms, zoas, rics, and colt coral have sort of closed up and just don't open like they did before--Also, some of them look like they are reaching for lignt--I have checked my water and params are 0 trate, trite, ammonia, ph=8.2--I have done water changes religeously and haven't had any problems--my livestock is a 6 line, hi fin goby, a cleaner shrimp, various snails and 5 scarlet legged hermits--any help or recommendations that you could provide would be appreciated--could it be a coral war or just a phase?--GSP, Xenia, finger leather and LPS all look better than ever--