We buy them when they are sticks 2 to 3” long and we either use super glue or two part epoxy and for a year it holds fine until it grows huge and we make the mistake of knocking it off while cleaning our tank. Now our little frag is 4” x 6”, 8” tall, and heavy.
Now what do I do?
The rock is covered in coralline algae, you can’t take the base rock out to dry it off so you get a good seal? The two part works sometimes, sometimes not. Do you take the coral out, dry off the bottom, place a whole tube of super glue on the base, let it set up and place it on the live rock, holding it for a minute till it sets up. And then crossing your fingers hoping it will last? That is what I did last night and although I have had corals for years I am still a novice when it comes to SPS.
And I know that some of our corals will encrust to help support themselves but others do not and that’s the ones I am having trouble with.