New to indoor growing. Back in the day we planted outdoors in rich soil sometimes buried fish near the root balls. Always had decent results. Now my state has legalized growing for personal use and trying to get my head around the overwhelming amount of info for indoor. I'm sure I'll have many stupid questions but the first one concerns nutrient ppm. I read some similar threads and I'm more confused than before. When mixing nutrients I gather my filtered water ppm would be added to the mixed ppm? Ex. my water is 200 ppm. Mix ppm target is 500. Am I to mix to 700 ppm? 500 for nutes above the 200 tap water or 300 nutes and 200 water for the total of target of 500? I'm probably a week away from starting 2 autos only because that's what I have presently available. Soil musings are probably coming next. Thanks.