Advice please never done a box b4 Bought bcnorthernlights boxes for 200$

I recently had the opportunity to purchase 2 bcnothernlight boxes a mothership and a bloombox for 100$ each. I understand they r quite expensive but in the bloom box the 2 430 HPS ballasts were toast so was the computer but fans, glass, drip, r all good the light bulbs r still good too I put in a 8 x 54w t5 fixture in for veg/cloning. Right now I have 9 sour deisels and about 80 chemdog x buddah sister clones in the bloom I have 2 of each for moms in the mothership the mom box I put my own 400w ballast and MH computer and everything still good. I am using a 1:3 ratio of coco, vermiculite, perlite. And rockwool for clones. I am experienced in oudoor and some indoor growing but nothing like these guys. Anyone have any good advice on nutrients, ventilation, grow stages? I could really use the help. I'll Post some pics and hope the advice flows