Do paly polyps get bigger with time?

ReefCowboy

New member
I'm not a Zoa/paly guy, like them but do not read much about them as I should maybe. I bought a this paly colony about 6 months ago and the polyps were all small. With time I noticed they got bigger and now some are the size of quarters.

I recently bought a small colony of the same type and they are the same size as when I first got the first ones, small maybe 0.5" diameter across.

My question is, do they get bigger due to lighting? Low light maybe? They are placed mid tank among acans,chalices.
Here are a few pics.

Size they came in:


Size they got:


What kind of palys are these? Would they get bigger?
Thanks for all the help
 
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