I need an ID on a pesky algae that I have been fighting with

[Myka]

That's not any Bryopsis that I'm familiar with. Urchins are usually really good for random algae.

[ogopogo]

I have one urchin already. My tank stocking is rather low currently. 75 total gallon (60 display 15 total water in sump) 2 watchmen gobies, 1 flasher wrasse, 1 dotty back, and numerous snails and hermit crabs. With one urchin too. Would another urchin be to much?

[Craigdillman]

How much of it do you have? Have you tired Manuel removal of all the stuff you can get /scrape off and then trying to let the CUC get it from there