I've run that Tangerine Dream before, crazy stretch on it.
Nice .
I run my plants same style but i can see i need to up it to 3 gallon pots vs my 1.75 gallon potters .
25 per 1000 watt at 1 and 1/2 week veg in 1.75 gallon pots forced to 4 main tops . plants trimed up first day of flower then again 2 weeks in to flower .65 to 70 days flower in a amended soiless mix (seems to work withmy well water best).
Next room i plan to alternate mh and hps.
I had majore yellowing in the 6th week no matter the mix or feed . i would love to keep my 1.75 gallon potters at 1.5 week veg but they are fadeing why to early any ideas
Those plants look very good. I'm sure the added week of using the bloom booster will help out in yield when you harvest.
Dankwolf - Have you tried using fabric pots or air pots instead of the plastics?
-Funk