Algae help!

[chrisdafish70]

My tank has been up and running for over a year. I recently just added a second light and I've noticed this green stringy algae on my rocks now. Love some advice on how to get rid of it. I've also noticed these tubes on my rocks but I've believed they have been there since I put them in when I bleached them, are they vermaited snails?

 

[CoralB]

Urchins will take care of this algae .

 

[Lavey29]

looks like simple GHA probably gaining a foothold due to adding the second light. Increase a diversified cleaner crew and some manual removal and you should be fine. May have to evaluate your light intensity now and your duration too.