I would just add Per gallon of soil 1 Cup of worm castings, 4 Tbsp's of 4-4-4 organic dry amendments if vegging or if sending into flowering I'd use something like a 3-9-4, 1 Tbsp of of kelp meal and if I thought they needs a little Nitrogen I would use a Tsp of blood meal.
Water with Cal-Maged water at 5-10ml per gallon of water 20ml if using RO water and always ph your water.