I bought a decent sized zoanthid frag from my lfs
about 3-4 weeks ago. I can tell it has grown bigger...the "stalks" are much taller now. How long before it starts moving onto and covering the rock it's sitting on? That's what I want...for it to spread. It has heads all the way down to the base, it just hasn't sprouted new ones yet.
Here's a pic of it....