Ok, we need more info (as others have mentioned). The big clue for me is the 20 anemones in the tank. Typically anemones split either when they are very happy or mildly stressed. I suspect the latter. Also, being able to keep soft corals suggests a high nutrient environment, perhaps even too 'dirty' for the easier of the hard corals.
So my questions would be, are you measuring your parameters with quality test kits, like say Salifert, or are you using API? A reading on phosphate will help to determine if it is a high nutrient issue. Also how are you measuring salinity and what is your source of water?
The photos you show of the acans and candy cane are of corals that are not happy and open. The question being are they staying closed because of water quality issues or fear of the voracious predator waiting for them to inflate?!
My gut says, most likely a nutrient issue, possibly insufficient lighting and when we have adjusted/ruled those out, we will then have to see if the angel will play nice with LPS or not.
Dennis