Hey, question so I bought some new zoas from my lfs about 2 weeks ago and a new double head torch about a week ago, now I already have some zoas and a single head torch. Problem is the torch hasn’t opened really and extended has a good flesh line around the Skelton though, and the zoas haven’t opened at all for two weeks and my older zoas open sometimes and then some time don’t. Has anybody also rain into this problem, have done a 10% water change tank is under half a year old around 5-6 months parameters are all good calcium at 380 but I dosed to get it up always around 380-420 wjth a decent amount of corals. Debating a magnesium problem being the cause, but I’m not sure anybody got any ideas?