Your meter shows two numbers: EC and pH. Here's what they really mean, and what to do when they move.
- EC = how much fertilizer is dissolved (tap water is usually around 0.2–0.8)
- Every crop has its own EC range (lettuce 0.8–1.2, tomato 2–3.5)
- ppm to EC: divide by 500 (500 scale) or 700 (700 scale)
- pH decides whether roots can absorb nutrients (most crops 5.5–6.5)
- Pro trick: EC rising while the water drops → top up with plain water. EC falling → add a little A + B
- Fix EC first, then pH, in small 0.2 steps, and re-check after 30 minutes
⬇ Free app with a pH & EC log, trend charts and advice: https://play.google.com/store/apps/details?id=com.hydro.calc&referrer=utm_source%3Ddailymotion%26utm_campaign%3Dec_ph
⬇ Free hydroponics lessons: https://aaa78jo-tech.github.io/hydro/
Chapters
0:00 What EC means
0:17 EC ranges and ppm
0:34 pH and the trend trick
0:57 pH drift and fixing
1:14 Log readings in the app
#hydroponics #ec #ph
