hydroponics.howFIELD GUIDES 02
SUBJECT COLLECTION / hydroponics.how

Nutrients & mixing

Elemental ppm, EC, fertilizer recipes, stock solutions and reservoir management.

4 detailed guides7 system modelsSources beside the claims
TRACE THE CONNECTIONSNutrient film technique: Start with the solution → Lift and distribute → Pass the root zone → Recover the outflow. Two shallow channels with branched supply and gravity recovery.1 / RESERVOIRStart with the solution2 / PUMPLift and distribute3 / CHANNELSPass the root zone4 / RETURNRecover the outflowConceptual sequence. Follow the guide for full operation and return.Start with the system →
Nutrients & mixing

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 & mixing

EC, pH and the two “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 & mixing

Stock solutions and injectors

Calculate a dilution factor, keep incompatible salts apart and verify what the injector delivers.

6 min + guided practice →Nutrients & mixing

Reservoir 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 →

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.