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Burnt ?

Sygnoman1987started grow question 3y 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

Sygnoman1987

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Leaves. Tips - Burnt

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Organomananswered grow question 3y 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 3y ago

how can i effectively reduce soil ph ?

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Robertsanswered grow question 3y 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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