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Travis572
Shawn
You can attach a non-grafted discocoma to the desired spot using a regular syringe needle. No glue is needed - in a few days, the little creature will attach itself, and if it doesn't like the spot, it will even crawl away despite the needle.
Curtis
Can you grow a synularia, sarcophyton, xenia, etc.?
Selena4467
It is possible, but it is better to use some kind of fixer—a small strip of flexible plastic or rubber. You can even use two needles to avoid piercing the animal itself, or in case of its considerable size, and secure the fragment on the stone using such a strip.