Hello Janine,
This is a very intresting subject. You mention your wonder of how this coral remained alive. Well I to would have to wonder this. I had a bleaching event a few years ago. I did notice that the corals in question would also still grow. Either one of you notice this as well ? So I would have to geuss that they would still be getting some of it's energy source from the water column. I know the both of you feed plankton additives so Then the question would be wether it was from the additive or from say nitrogenus matter in the water column that substained life. Brad you feed phtyo right? So would geuss your coral in question did not remain alive directly from that. Janine you feed GP right? I don't know much about them so wouldn't geuss on that. I would suspect though that the corals were pulling their nitrogenus needs from the water column itself. But who nows for sure?? Very intresting.
PS Janine let me know when she's purple hint hint
