why is my phytoplankton not dark like others

[The Guy]

Originally Posted by donkey77

temp is about 72 74
airstone to a slow boil
this is my first batch
3ml f2 for about 3 gallons

I was told not to use an air stone only a hard tube open ended at the bottom of the bottle, also I use a 6500 k compact bulb.
I'm new to this so we'll see how it goes.

[Cal_stir]

RO water is too pure, I used carbon filtered water and yes no air stone just a piece of rigid tubing.
the light should be ok if it came in mamroo's kit, he grows nice green phyto.
6500k cfl works good.
what phyto you growing?

[monocus]

most likely it has to brew for a longer period of time.what strain of phyto are you using?i use r/o water at 1.025 salinity run through an uv sterilizer.for a gallon of phyto i use about 3 ml of micro algae grow.lighting i made my own led strips using 1 watt leds(25 per strip)various cultures like different lights(nanochloropus-white/red,tetraselmus-red,isocrysis-blue-etc)i'm using aquamedic reactors for my cultures and rotifers