Sorry about the really dark pic, you can still see how full the room is and for anyone that hasnt read the entire thread this room is 11x11 feet inside with four plants in 20 gallon recirculating bubblers with remote res, 5600 WATTS! 4 1K sodiums in the corners and a 1K MH and a 600 HPS in the middle, 1500ppm C02, 90 degrees because my plant like it! the room is sealed tight, no air exchanges ever, air conditioned and dehumidified runing latewoods recipe but not as strong. When I do my weekly 80 gallon res change, its 80 with the res beacuse the bubblers arent all the way full and the root masses are HUGE I end up with a 1100 ppm mix as follows:
80 Gallons tap water, My water comes out of the tap at 20-30ppm dont be jealous!
GH Micro 500ml
GH Bloom 1000ml
GH Grow 200 ml
Hygrozyme 500ml
SM-90 240ml
calmag + 300ml
They seem to really love this mix, Peace