Yellow spots on early veg stage.

What is the best PH chart for Hydroponics?

TheSadBadGrower said:

I would change the res, feed 50% of rec dosage for this week and get ph in the 5.9-6.1 range.

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According to this PH chart if I stick to that PH range I will be locked for Ca..which may be actually the plants problem...

RnineT said:

According to this PH chart if I stick to that PH range I will be locked for Ca..which may be actually the plants problem...

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Thats for soil lol

TheSadBadGrower said:

Thats for soil lol

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isnt Ca only available up to PH 5.8 in hydroponics?

RnineT said:

isnt Ca only available up to PH 5.8 in hydroponics?

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No. then it would be marked red like the others.

Apply sulfur sprays or copper-based fungicides weekly at first sign of disease to prevent its spread. These organic fungicides will not kill leaf spot, but prevent the spores from germinating. Safely treat most fungal and bacterial diseases with SERENADE Garden. but first cut off the yellow leaves.