Indoor Leaf browning

[Megrow]

Hi AFN! currently have a 2 week old purple punch auto from Barney's farm growing in a plastic greenhouse.

Temp and humidity have been fluctuating quite a bit (15C - 30C / 45% - 90%)

Have some brown patches on one of the first leaves not sure what it could be.

My guess is poor drainage/over water (even though I have barely watered it)

Any ideas please?


Thanks in advance

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[namvet25]

Your plant looks fine except that one leaf but unless it starts spreading don't worry.You should have a fan circulating fresh air around the plant with your high humidity to ward off mold.You may also want to startfeeding light dose of nutes now and also start using cal/mag.

 

[Megrow]

Your plant looks fine except that one leaf but unless it starts spreading don't worry.You should have a fan circulating fresh air around the plant with your high humidity to ward off mold.You may also want to startfeeding light dose of nutes now and also start using cal/mag.

Thanks for the advice. I actually put a fan in last night. Will the soil/compost not provide enough nutes? Bought some canna pH down today as my tap water is pH 8

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[Megrow]

Opposite leaf looks like this with a wired streak

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[Megrow]

Opposite leaf looks like this with a wired streak

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Maybe it is some kind of larvae burrowing in my leaf?

Any ideas on best method to protect/prevent/fix

Thinking of buying some lady birds and knocking up some organic pesticide

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