Alkalinity: Focus on the Water Alkalinity, Not the Water pH
1:03:58
Plant Nutrition Sherlock Holmes Style
48:44
Watering Science and Art
1:17:55
Plant Health Pyramid
25:02
e-GRO Webinar - pH Drift
42:20
Identfication of Nutrient Deficiencies (Greenhouse Plants)
30:29
Geniale Bauarbeiter, die auf einem anderen Level sind
22:08
What are pH, EC, TDS, and PPM and How Are They Connected?
43:22