I have a quite big GSP nicely on my rock centre stage, the type whose polyps are quite long and looks like grass. My question is that I want to grow another GSP on my rear glass but of the much shorter Polyp variety. So I bought a piece yesterday medium size. The LFS said I could cut it up into smaller pieces and superglue it. He said leave the glass dirty as its something the GSP can attach. Don't try and glue the whole thing as it will fall off. So I cut it into about 7 pieces and glued them on....the glue dud not take very well and today 2 fell off so I dud scrape the glass and refused onto a cleaner surface. OK the display looks rather messy with 7 bald pieces of flesh attached to my rear glass. How long does it take for them to sprout green polyps and then eventually spread and grow.