Nutrients & mixing
Elemental ppm, EC, fertilizer recipes, stock solutions and reservoir management.
Nutrient mixing: from grams to elemental ppm
Scale two documented fertilizer examples, read the bag analysis and calculate what actually enters the final solution.
Interactive tool · 6 min + guided practice →Nutrients & mixingEC, pH and the meter “ppm” scales
Calibrate your instruments, record unambiguous units and interpret concentration without pretending EC is a nutrient analysis.
Interactive tool · 6 min + guided practice →Nutrients & mixingStock solutions and injectors
Calculate a dilution factor, keep incompatible salts apart and verify what the injector delivers.
6 min + guided practice →Nutrients & mixingReservoir management and solution replacement
Use a water-and-nutrient ledger to distinguish top-ups, rebalancing and a complete batch change.
Interactive tool · 6 min + guided practice →Nutrients & mixingWhy pH drifts up in hydroponics: measure the cause before adding acid
Separate source-water alkalinity, nutrient uptake, mixing changes and meter error with a repeatable measurement log.
6 min + guided practice →Nutrients & mixingNutrient deficiency symptoms in hydroponics: narrow the possibilities, then test
Leaf position and symptom patterns guide an investigation. Meter readings, the mixing record and laboratory results determine the correction.
6 min + guided practice →Nutrients & mixingMasterblend 4-18-38: the three-part recipe and its elemental ppm
Three bags against one published row: what each part adds, why calcium nitrate goes in last and alone.
Interactive tool · 7 min + guided practice →Nutrients & mixingJack’s 321 explained: grams per gallon, mixing order and elemental ppm
Jack’s 321 is one published mixing example for a two-part fertilizer plus Epsom salt; this guide turns its three gram figures into elemental ppm and shows where the readout stops.
Interactive tool · 7 min + guided practice →Nutrients & mixingReading fertilizer labels: N-P-K, the analysis panel and nitrogen form
A soluble fertilizer label states nitrogen, phosphate and potash by mass, then an analysis panel and a derived-from list; read all three before a gram goes into a recirculating tank.
Interactive tool · 7 min + guided practice →Nutrients & mixingAdjusting pH in hydroponics: acids, bases and alkalinity
The pH reading tells you which way to push a solution; the water’s alkalinity tells you how hard, and most adjusters leave a nutrient behind.
6 min + guided practice →Original teaching models and worked examples, with extension and manufacturer sources where applicable. Independent specialist review is pending. Numerical tools verify accounting equations; they do not certify a crop recipe or fish system.