I have two frags that have been closed for about a week. Have moved them and no results. Everything else is fine in the tank. Took them out and inspected them but didn't see anything wrong. What should I try??
temp too high (over 78 is not great for some)
high N or P
wrong kind of spectrum - they can "fight off" some bad for a while, then they just wilt and die
pests
See if anything comes off in the dip. Post your tank params.