ok I posted awhile back with a problem everything test's out great so heres whats happening intermitent reccession then healing ,off colored spots or patches on branches(not acro flat worm bites) so the tanks are getting warm(85+ somtimes) which is what I think it is and I also think some tanks get warmer then others even though there part of the same system because some corals of same type or from same colony are doing fine with no affects or symtoms but same coral in diffrent tank but a tank still part of same system isnt.Any idea's I've tested everything its just the randomness of that gets me and the fact it only affects certain tanks.