Brown spots top leaves, magnesium deficiency?

TtKk · Jan 26, 2021

Hi,

DWC, 7th week of flower, couple of weeks ago she started to develop brow spots in a top leves.

Bought call mag and adding it for more than a week.

Just wanted to check if it is going to help or I've misdiagnosed it.

Cheers

manfredo · Jan 26, 2021

CalMag alone probably won't do it...you might need to add Epsom salts with the calmag to get the mag up enough. In soil I add 1/2 tsp. per gallon with my calmag, every single time I water...but that's soil. IDK about DWC. You can also use it as a foliar for faster results, with lights off of course.

Pics would help. Good luck.

TtKk · Jan 26, 2021

Thanks for quick response. Added pictures later as i forgot first round. I'll get the Epsom salt. Cheers

Brown spots top leaves, magnesium deficiency?

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