What works the best for attachment is to get a needle and piece of light fishing line. Pierce the stalk and thread the fishing line through the coral. Now gently tie the stalk to the rock you want it to attach to with the fishing line. Place it where you want it in the tank and leave it alone for 2 weeks. After that time check (it should be attached to the rock). Cut the fishing line and gently pull it from the stalk. Mission accomplished. Works great for colt coral too.
