So I've been noticing polyps that are gone which were there before. I've even seen some that are just hanging by a thread as if it were a tree that was being eaten by a beaver at the base.
As for the spider-looking thing (isopod), I think I have seen things like that running around. I've definitely seen amphipods (the shrimp-looking things) running through the colony so maybe a fresh water dip is in order.
As for my water parameters, my SG
is 1.025, pH 8.2, nitrate <5ppm, Ca
400+, ~12 dKH
and temp usually around 78 degrees. Lately, it's actually been warmer so the temp has climbed to around 82 degrees sometimes (yikes!).