Interior Reef and The Reef Shoppe are both reliable sources for photosynthetic gorgs. I haven't seen the ones at J&L because they only update the new¬eworthy page about 6 times per year (sorry guys at J&L if you're reading this, just sayin' it though, for a junkie like me who presses refresh on that page about 5 times per day that page really doesn't update very often!!), but anyhow, it it IS a purple brush, that is probably
Muriceopsis flavida and this is one of the nicer photosynthetic gorgs in my opinion, so you should totally get one of those if you can.
