Need Help IDing

8-10 of these little green things sprouted from one of my rocks over the last day or so. What are they? Good or bad?
 

Attachments

  • green things.jpg
    green things.jpg
    45.1 KB · Views: 4
It is neomeris (Spindle Weed). It is alcerous algae which requires good calcium and alkalinity levels to grow well. Tends to appear on fresh liverock but rarely survives long term.
 
Back
Top