So, I recently picked up a large rock covered in GSP from a friends tank in which it was fully open. I know this is a soft coral in which is considered a beginner coral or nuisance due to the fact it can grow quick and over everything. But honestly, I love it and since I'm working on a mix reef I gotta have some. Now, the problem I'm having is the same problem I had 3 years ago in a different tank. It just won't open! Everything else is fine but for some reason GSP hates me. Has anyone else had this particular problem with this coral and know exactly what was off and aided in its stubbornness? I also don't think it's flow and my friend and I talked about the length of its polyps due to flow rate as he had a lot ranging from high flow to dead still.