KiKnChikn - It is not your eyes. They do keep the GSP at bay, I actually frag them and use them to help control where the GSP "roam" - a corral if you will..
I had no idea that they were rhodactis, when I bought it originally (it was just 1 piece) and it was listed at the LFS as a ricordea... I always had my doubts but was never iterested enough to figure out what it actually was... Very cool.
Thanks, Patrick