Fragging GSP
 

I have some green star polyps and plain star polyps.

They are both on big rocks that I cant take out of the tank.

How can I get a frag without destroying the whole colony???

You can frag by placing a piece of rubble on top of it and it'll grow on top and you can cut it with a scissor. (Slower way) Or if any pieces that come up away from the rock can be cut off and rubberbanded or glued to another piece. (The faster way to frag)

Yeah, what D12monkey said. :)

You have two basic options.
1. Try to get the colony to spread onto some smaller pieces of rock.

or

2. Try to cut and remove a fragment of the existing colony and glue or rubberband it to some rubble.

Here's a link: http://www.reefs.org/library/farmertodd/frag/soft/4.htm

thanks! I will try that