My next addition: GSP

My advice: Keep this away from your rocks. GSP will spread like crazy!

Yeah, that's what I was told! I moved him away from my main rock, but I've seen people put them right on the sand...? I would need another small liverock if I wanted to do that, right?

I keep mine right on the sand. They tend to grow in clumps instead of a mat. I think they extend farther this way. At least that is what I have noticed.