Thanks for the nest/liter estimation, i don't think i'll stop growing mine for now, i find it such an easy thing to do.
I grow it in
4 liter jugs and store it in the fridge for weeks, shaking it once a day
On the subject of phyto I once put a few soda bottles under 600 watt sodium pressure light in my "garden" and i achieved the meanest darkest black color on my phyto i ever got. I thought it went bad until i poured a little bit in a glass and saw green. I have yet to reproduce that result under normal CFL bulbs.