OK, a few answers first.
I have not checked the iodine levels so I do not know if they are elevated, but having said tht I thought good levels of iodine were healthy for corals?.
when I bought it from my LFS
it was under VHO
halides about 12 inches from them and seemd OK, it was not pulsing then.
My calcium is a bit low (350) so I have started dosing with Kent Marine tech A and B supplements to try and get it back to about 400. My LFS
has said this is a good reason why it does not pulse as they do stop pulsing if the calcium levels drop.