I agree. But on a good note its easy to peel off of glass. It is pretty, but it seems to be a hot coral as it can overtake many other encrusting species. I let it grow onto golf ball sized rocks and sell them to the LFS for $25 a piece.
Dan mine did the same thing ,at the time my tank was new and had nutrient issues not sure if it was a coincidence or what but soon as I got rid of the high nutrients it took off..
Not trying to jack this thread but I've had a frag of GSP for a few months and it hasn't gotten bigger at all. But my SPS/LPS and zoas are growing just fine? Weird