@GreenJewels ok here is the way ppm can work if your ro is at say 50 ppm and u need to put say 250 ppm in it that puts you at 300 ppm before nuits and say you want to be at 750 ppm total so 750 turns into 450 left for nuits and say you have 4 different nuits you want to put in. most of the 450 will be used by your base nuits if you are useing a grow micro bloom system and you are in veg you will add roughly 200 ppm of micro and 200 ppm of grow now you have 50 ppm left for what ever else you want to put in. now keep in mind of what your plant needs at the stage it’s in so in veg you will need more of the NP and not as much K and flower u need more PK and less of the N. So it gets confusing when you try to micro manage the NPK but if you get it down you will love hydro. I hope I didn’t confuse you to much with the NPK and numbers they are estimated numbers. The numbers will change depending on size of containers the water is in as well as temps of water and if I remember right you where around 60 water temp for a week or so that is what stunted the growth most times you want water sweet spot is 65-68 never higher then 72