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Red marks on week 2

Bristolguytystarted grow question 5y ago

I am starting to see red marks on the leaves, Is this just a PH issue? atm I use a PH of 7.5 as I am waiting for a PH down solution. will correcting this help? EC is 670 if that makes any difference.

Bristolguyty

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Feeding. Chemical composition

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GMSgrowsanswered grow question 5y ago

You need 400 ppm 0.8 ec right from the start of their lives. 5.8 ph, use vinegar until you receive your ph down. Increase feed 100 ppm 0.2 ec every week after you see new growth start. Cheers

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