Wow that’s awesome. They have some neat stuff there. Check out this combo zoa rockShould be fine. I won't say it will stunt growth, but it definitely won't kill them. Some people stay right there at 250-300 par. This is the rock I bought.
I ordered it through my LFS from Sea Dwelling Creatures, they do a drop once a week of Wysiwyg. I know most are common blue shrooms, but curious to know what is on the side and how the green one will grow out. I say one last week I really wanted, but it sold too fast. Another one this week is killer looking but $240. I'm kind of gambling the lower price ones for hitchhiker cooler corals.