Colt Coral Help

[PurplePolyp]

I had bought a Colt Coral awhile back and because of where I put him, he died. About a week later, I noticed a colt coral about 1/4 inch big growing in the bottom of the tank. I put him on a piece of live rock and he is thriving. About 3 days later, I noticed that there are a total of 4 Colts growing. I have someone that I can give them to when they get big enough, but will it be dangerous to my tank if I continue to let them grow? I don't want my tank to become over run with them. Right now, the only other corals I have are a Carnation Coral, a Maze Brain, and a Purple Zoanthus Button Polyp. If it will be okay to keep these 4 and let them grow up, how long should I wait before removing them from my tank and giving them to my friends?

 

[Grizz]

Just keep on eye on it, It grows like weeds and it likes to self frag I cursed some of my friends with a few frags

 

[PurplePolyp]

Thanks! I'm still wanting to keep one of them so I will go ahead and take a couple out and keep on eye out for more popping up. Let a couple grow and keep the one that turns out the best.