I purchased sight unseen black sun corals from Drs. Foster and Smith. They are beauts and actually the rock was half black sun corals and half orange sun corals. The problem is they encompass the rock 360 degrees except for one 1.5 x 1.5 inch area at the bottom. I envision them previously being sort of a stalagtite form in a cave. Currently I have the base set on a seashell in the sand and one badly damaged black polyp from shipping/handling is leaning against a rock propping the whole thing up. I need to somehow mount them on another rock that is kind of L-shaped that can support them. I can't target feed them in the tank because I really need to be able to rotate them so I can make sure all are fed. And I need them on a sturdy rock base for easy removal/replacement in and out of the main display tank. I tried a plastic cereal container covering them which set in the sand and then was tall enough to extend above the water line. But if they don't extend their polyps (like the blacks didn't last night) I can't reach in to individually hand feed. I mounted my other orange sun corals using a mix of that moldable epoxy they sell at the LFS but that alone didn't work so I used SuperGlue gel with it and 6 months they're still mounted on the same rock with new baby corals. Is there something better to use? The epoxy & superglue trial took several times before I got it right and luckily I didn't damage my corals. But these new corals seem much more fragile and I'd like to use something that'll work the first time. I have 3 other sun coral colonies. One yellow, being nursed to health from LFS; and one orange that has given me a tonga branch full of babies who are 2-1/2 months old (plus or minus a couple weeks) and yes I'm a glutton punishment. Here is a picture of them. And here's a picture of babies. The parent colony is in the background.
Anyway, any idea how I can fix that before they fall off and get damaged?