I put some on the back glass to grow it on there and gave the rest to my nephew who just started his tank.what happened to the GSP?
Good to know. I have it on a magnet and was going to move it to another area when there is a good amount of coverage on this area. But I will start lower when I move it.Fun!
Note that GSP grows up acrylic pretty fast, but down rather slowly.
So if the intent is to cover the back, you may want to move that down.