I have switched from Humboldt Natural Grow to the Lucas Formula after completing a flush. My plants were showing cal, mag, zinc and iron deficiencies. How long will it be before they resume full and vigorous growth.
Here is my situation.
Grow Medium: Hydroton
System: Waterfarm Buckets
Nutrients: Humboldt Natural Grow and Bloom
Water: Tap (190 ppm)
Lights: 1000 watt dual arc, 1000 watt daylight (Large A Wings with super spreaders)
Temp/Humidity: 65/76, 20-35%
Strains: 3 Affgoo and 3 Skunk #1