what can i expect big bud white widow

hey im useing a 9 pot wilma set up with i think 9 gallon pots 4 inch rock wool blocks sat in coco with drip system a 600 watt duel spectrum hps vitalink a and b and flower a and b and bud blood, big bud and over drive i have perfect conditions fully ventalated heat is 79 with lights on and 70 lights off my plants are first week in to flower i veged for 3 half week about 14 inch tall and least 5 main heads on each plant grown really well compared to last crop in soil does any one no how much i can get per plant? and how often should i water? and is my ph at 5.9 ok? i have my ppm at 400 during veg and at mo 800 to 900 seems to be doing well haveing to add water and nutes same time any advise would be helpful even any tips help make tent better conditions money is not a problem!
 
your pictures are debateable iv grown far better in soil so is your info debateable? i veg for 3 weeks then flower for 7 wot are u doing for a pound a plant?
 
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