MIMedGrower
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No mention of base nute feeding. and adding more lime to pro mix is likely too much.
Calcium is immobile for the most part. Deficiencies show in newer and upper leaves first.
Magnesium is mobile and deficiency shows on lower leaves like the pics here.
However mag is in most nutes and in tap water and the soil so deficiency is usually caused by another factor.
I think possibly watering too often or incorrect fertilizing started it and too much lime is making it worse.
The lime takes a week or two after wetting to activate. Then it keeps working to raise ph.
For me pro mix has been ph stable at about 6.2 consistantly. If i see the runoff ph drift it is because of nute buildup or another factor with the plants.
Calcium is immobile for the most part. Deficiencies show in newer and upper leaves first.
Magnesium is mobile and deficiency shows on lower leaves like the pics here.
However mag is in most nutes and in tap water and the soil so deficiency is usually caused by another factor.
I think possibly watering too often or incorrect fertilizing started it and too much lime is making it worse.
The lime takes a week or two after wetting to activate. Then it keeps working to raise ph.
For me pro mix has been ph stable at about 6.2 consistantly. If i see the runoff ph drift it is because of nute buildup or another factor with the plants.