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Nutrient lockout, ph imbalance or nutrient burn?

TheNoobDudestarted grow question 5y ago

Unfortunately I don't have a ph meter, so my best guess is one or more of these problems: nutrient lockout, ph imbalance or nutrient burn. The first 3 photos are from an Auto Northern Light and the last 2 are from an Auto Jack Herer.

TheNoobDude

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TheNoobDude

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Leaves. Edges burnt

Leaves. Color - Yellow

Leaves. Color - Dark-brown

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smoke24answered grow question 5y ago

A ph meter is an absolute must have. Without knowing the ph its all a giant gamble, you have no way of tracking ph shift, and thus have no way to accurately adjust ph. You can get a good meter on amazon for about 45 bucks. Happy growing.

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