candycane coral and polyp growth

hello in my tank i have a button polyp frag that has about 30-35 heads and i was wondering when should they take over the whole rock( i have a the frag for about a week and there are already 10 new heads.

also at my lfs in a 10$ frag tank they have a few candycane coral frags. the frags are only one head which isn't that impressive how long does it take for a single cc coral to turn in a good size thanks

my water parameters are perfect and my lighting is coralife t5 lunar system

 

my candycanes split heads at least once a month... i have around 30 head colony and it is about 2 1/2 years old..

 

bump

 

Mine split well over once a month. Around twice a month id say. But mine really grow like weeds. I have a pink candy cane that wont stop growing and a green one that wont start growing. Its weird.

 

my candy canes have always been slow growers, but my sps grows like crazy... I assume they must like different conditions... still, why not give it a shot if it's only $10/ frag and see for yourself?