why is my phytoplankton not dark like others

[donkey77]

this is day 8 and i'am about to split the culture and when i put it into bottles it was not that green, did i not let it go long enough, just seems to light of green i will go to day 10 but any input would be nice

[Cal_stir]

are you using fertilizer?
are you culturing rotifers close by, if contaminated with rotifers they will eat as fast as it grows.
light for 16 hrs a day?

[donkey77]

no rotifers giving f2
light 16hrs

[Cal_stir]

what kind of light?

[donkey77]

i think its a led it's the kit from mamroo200

[Cal_stir]

I think they are flourescent, which should work fine.
What about temp., and you have an air line running like a slow boil.
How much f2?