Sorry for the loss.
Originally Posted by alarmguy66
Any chance there is some life deep in the frogspawn that might recover? The goo was only on one head, but all 3 died?
Slim in these cases. The only hope is inspect the coral branch below the crown. If you see any small "bumps" they may be new buds. If so there may be hope but don't be suprised if they also persished. When corals do battle with mesenterial filaments, there's usually little left.
Should I break off and discard an affected head in the future? Would the other heads have a better chance of surviving?
If only one branch of a colony had been affected at first, fragging off the dead/dieing would have been the best course. If left, the dieing coral head would usually develope brown jelly disease which quickly spreads to the rest.
As well as the carbon I would suggest a few good water changes with well aged/aerated SW
. If you have a skimmer going that will also be a plus.