<a href=showthread.php?s=&postid=14184229#post14184229 target=_blank>Originally posted</a> by reefworm
marine epoxy, such as aquamend, is reefsafe. mix as prescribed, and form into a small ball of an inch or so in diameter. put a large bead of superglue gel on either end. stick your frag/rock on one end, and then fix to the target rock by pressing the other side in with a twisting motion. if it's large rock, leave it setup before moving it - just keep the rock wet