Unfortunately I don't really have time to deal with this right now (diary), but I wanted to let you know how things are going.
All of my plants are growing beautifully, I don't notice any difference between the two feeds.
They have been under 18 hours of light for 4 weeks.
Then I reduced the light by 1 hour every 5 days.
They started flowering at 14 hours of light a day about 4 weeks ago. They run under 12 for about 2 weeks now.