Wish you luck man. That undata still looks sweet.
I have noticed on some of my tabling acros that shaded areas don't fair well. I have started pruning my colonies for that reason.
If the Berghia dude answers you let me know and maybe we can go in together on some. I'm worried my wrasses will take them out, but I want to try. I'm not at plague proportions yet. Alton said once that for every one you see there are 10 times as many you don't see.