I've been poking around here and the web extensively but haven't been able to come up with a concrete answer to this question.
My Setup:
2 pots @ 27 Gallon each RDWC SCROG
4x8' Tent
2 XXL 1000w HPS on a mover
6" inline fan
GH Nutrients Flora Trio with CalMag, Armour Si and HydroGuard all to...