Id this algae

[Brian barranco]

thanks for the info!

 

[Fudsey]

This is what my tank looked like at 68 days, all the rock was green.

At 90 days most of it was starting to turn purple

 

[road_runner]

Btw when I say bring down your nutrients I am assuming you have a good skimmer, use activated carbon and use gfo for at least at needed basis..
Filtiration is a key here.