What is this growing on the glass ?

[reef lover]

It's all just normal parts of cycling a tank we call them the uglies...but in time the tank will mature and stabalize don't panic!

And if u think algaes bad wait till your scraping corraline off everything!!

 

[David osborne]

Thanks for the reply and I'm just wanting to keep it sharp looking and ready to start placing my sps frags,

What I don't under stand is I have below 1ppm NO3 and very low PO4 in the tank but where does the algae find to nutrients to grow