Crop Stage

PPM

pH Soil

pH Hydro

Seedling and Clones

400-600

6.3-6.8

5.5-6.2

Early Vegetative

600-800

6.3-6.8

5.5-6.2

Late Vegetative

800-1000

6.3-6.8

5.5-6.2

Transition to Flowering

1000-1200

6.3-6.8

5.5-6.2

Mid Flowering

1200-1400

6.3-6.8

5.5-6.2

Late Flowering

1000-1200

6.3-6.8

5.5-6.2

Harvest

0

6.3-6.8

5.5-6.2