Possible manganese??? Maybe ph related do you ph your water?
I would give the soil a really good flush then try feeding some calmag next watering. Just make sure your water ph is good. The ph of your water can cause tons of nutrient problems.
Possible manganese??? Maybe ph related do you ph your water?
I would give the soil a really good flush then try feeding some calmag next watering. Just make sure your water ph is good. The ph of your water can cause tons of nutrient problems.