Algae ID

[Crimsontopper]

So I'm thinking this is gha. Is that right? Best solution that is non-chemical? Lawnmower blenny? I have an IM 10. Is that too small for a lawnmower? I've tried manual removal, but it's really attached to the rock and it hard for me to get my big fingers into where it grows. I have also reduced light time and intensity. Nitrates at 10-15, PO4 .01 ppm.

 

[ndrwater]

You could try a Sea Hare.. they do a good job on hair algae