Here are my tips for coco:
Plastic pots. Wet is your friend. No more than 3 gallons per 2x2 area.
Automation. Use pumps and timers.
Surfactants. Soap and or yucca root. Flushes salts and keeps everything wet.
ppms: 600-700 range.
Ph: 5.5-6.5
If you use low ppms, add a surfactant, and at...