Presets load N-P-K and the key other nutrients in ppm. The targets below stay editable.
Targets
Target nutrient levels (final solution)
ppm
ppm
ppm
% of total NAmmonium plus urea N, the rest being nitrate. Most hydroponic and soilless crops run 5 to 15%; above about 20%, root-zone pH drops and calcium uptake suffers, most when low VPD has already cut transpiration, which is what carries calcium to new growth. The calculator reads each product's N form from My Fertilizers and can balance toward this number. Leave blank to skip.
Other nutrient targets (optional)Leave at 0 to skip. Targets set here get a goal band on the calculator's result scales. Cl and Na are limits, not targets: the most you want in the feed. Under the limit counts as fine, and auto-adjust won't add any to reach it.