Trying my hand at DWC

You really don't need to play mad scientist with the nutrient formula. Your goal is to provide a steady amounts of nutes around the roots. Nutrient intake is an active process. The plant sends out carrier molecules to grab what it needs. So, you keep a proper concentration of each nutrient molecule based on plant availability, not so much the rate of usage in the plant. That is a factor, obviously, but nothing like most perceive it to be. In vege i'd suggest something akin to this: PPM 120-130 N 40-60 P 180-200 K 100+Ca 75-80 Mg 100ish S And, of course your trace elements, too. Any soilless/hydro fertilizer set up should include those without worrying about it. This is a safe, fairly low starting point. Nothing should get locked out, so any symptoms you see is a matter of adjusting the formula for an easy fix. All formulas will need some adjustment relative to your local variables. Better products should require very mnimal adjustments to avoid symptoms and properly power optimal growth rates... again, relative to local variables. Numerous brands come out to a similar ratio as above. Masterblend, kosher salts, cropsalts, megacrop, souther AG, athena pro line etc... Price is the best way to decide for such products. The type of ingredients used in soilless/hydro are ubiquitous commodities and don't come in tiers of quality. This is also a very similar ratio to what comes pre-charged in Pro-mix BX/HP products. or whatever their renamed bales are called now. It's not a coincidence. this ia a known and effective formula across numerous species of plants. I'd also suggest something that is pH balanced without adding any additional pH-balancers. One less thing to worry about is a good thing. I'd also suggest buying dry nutes - shelf stable indefinitely. Can still make concentrated amounts to easily dose out per gallong or liter. So, you won't be mixing up nutes daily if you don't want to. I have 50-gallons worth in a 2L bottle (10mL/L or 1.28flo oz/gal.. even if you don't know metric, it's way easier numbers to work with... 1:100 is 1:100, either way.) Can save a ton of money buying in bulk. I spend about 30-40 USD per year on fertilizer for 6-7 lbs of flower? rough estimate. Buy 25 lbs bags and pay 4cents per gallon mixed. Jacks 5-12-26 Part A + generic calcium nitrate and generic epsom salt. I'd also suggest the 0-12-26 No-N Part A and swap that out for flower phase when you need to reduce N but maintain Ca levels. 25lbs bags would be less than 200 up front, but you won't buy another bag for several years. 8lbs epsom and 25lbs part A matches up well, but the cal nitrate will last longer. If using No-N, that'll make the math complicated, lol... but double the length between purchases over time when averaging both out together rather than 1, obviously.