Go to walmart and get a cheap cleaning magnet that's used to clean your glass on the aquarium. Glue it to it and then put on your tankawesome and thank you, when you frag (?) the red one I want a piece of that too...
Get the small one
If the glass is too thick the small one may not hold it once the coral is on. I tried a couple sized magnets unsuccessfully and found the one from home hardware works well and hasn't harmed anything in my aquarium in the 2 years.
I though of doing that as well but I wanted the ability to move them if needed without damaging them too much. Then they super encrusted so moving them doesn't happen now anyways
Glue and just wedging gently. It grew from a small red frag to several plates of red. From there I just glued the purple and green above it and wedged in the green in the middle. Once that took I placed the middle purple and just let nature take its coarse
It was a few years ago. Most likely just dollar store gel super glue.
