Measuring and Managing Hydroponic Nutrients: PPM and pH Mastery

Control Is the Hydroponic Advantage

You manage light, nutrients, pH. But without accurate measurement, control is meaningless.

PPM (Parts Per Million) Meter

Measures total dissolved solids via electrical conductivity. Target 1000–2000 ppm for most crops. Calibrate quarterly with known solution.

pH Meter

Optimal nutrient solution pH: 5.6. Test 2 hours after adjustments. Adjust in tiny increments—concentrates are potent. Practice in plain water first.

Balanced Nutrition

Roots absorb as needed. Excess or deficiency of any element reduces yield, flavor, quality. Monitor both PPM and pH religiously.