Ziggy953
Aquarium Advice Addict
I'm not so sure that it is due to the recent damage via fragging. If you look at the pics, fully encrusted frags are having the same issues. I would get some carbon running and do some water changes as well. Testing the water would be a good idea as well. I know you tested but do it again and compare results.
Make sure the flow is good in the frag system. keeping the corals flushed will help in them healing.
Make sure the flow is good in the frag system. keeping the corals flushed will help in them healing.