It's a really weird algae. I took a snapshot of it with my phone and had it ID by people in RC but no one has a definate ID. I've never seen anything like it. Mike I have a feeling that you got this from the scripps water that you used to do your big water change, or have you had these already before the big WC? Try a seahare, verocious algae eater, the only thing that those won't touch are bryops.
- Nick