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Burnt ?

Sygnoman1987started grow question 3 years ago

Hey Guy's ! What's wrong my plants ? I use Lumatek 465compact pro 25% My soil is plagron royal mix(ph 7.5) I add RO water (ph 6.2) with calmag(0,5ml/l),start up(7ml/l) and power roots(1ml/l) This is the 4week. Thanks for the answers and happy growing !

Sygnoman1987

Sygnoman1987

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Leaves. Tips - Burnt

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Organomananswered grow question 3 years ago

Yep, a pH of 7.5 will cause trace elements to become unavailable, of which magnesium is one.

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Sygnoman1987answered grow question 3 years ago

how can i effectively reduce soil ph ?

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Robertsanswered grow question 3 years ago

Appears to be the beginning of magnesium deficiency. Cannabis likes slightly acidic. The 7.5 mix is slightly alkaline. Probably not best substrate for Cannabis in future.

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