Feed with a 1/4 strenght hydro mix with B1. For two days.
For veg give them 1tsp of each(Micro,grow,bloom.)
for flowering give them 1tsp grow 2 tsp micro and 3 tsp bloom. Start with that and then slowly take away the grow and micro near the end. And flush the last week.
Get some koolbloom to ripen near the end. Never let your ppm go past 1700ppm. best is 1200. Its better to go light. At least you know they are eating.
Once you experiment with the juice. You will understand how to do it. Then you can start adding things like humic/fulvic acid, Potasium silicate, bloom boosters, carbs, vitamins, Kelp for sprays. Go get some neem oil and start spraying early. Once you can see the mites you know they are far along. Get them early and you wont have to deal with it later when there is a build up.
Pretty much.. Experiment to learn. Hands on work makes you understand alot better. See what your plants like.