Should I trim this gsp now or wait? Growing on back wall…

[Leon Gorani]

So I am trying to grow a gsp wall in my tank on both sides of the back wall, I have a Red Sea reefer 170.
The gsp has grown onto the back wall pretty well so far, but I am not sure if I should trim it or wait a little longer till it grows out some more. I have never cut gsp and I do not want to mess it up and rip it all out if I mess up. Here are some pics of what it looks like. The red lines are where I thought about cutting, thoughts?

 

[Big Smelly fish]

I would let it grow,

 

[Morbo]

GSP is pretty hard to kill.

Are you planning on cutting it now so that you can start the other side?

Just use a razor blade, cut it on the lines you marked (or wherever you want), and then peel off the piece(s) you want to move.

 

[G Santana]

If you want it on that glass, let it go.

 

[Leon Gorani]

GSP is pretty hard to kill.

Are you planning on cutting it now so that you can start the other side?

Just use a razor blade, cut it on the lines you marked (or wherever you want), and then peel off the piece(s) you want to move.

The first image is the left side back glass of the tank, the second and third pic is the right side of the tank. Ok I just didn’t want to cut it and have the piece that’s growing on the back glass to die or something. But thanks!