Rapidly dying leaves?

[Caitysezrawr]

This is my second grow and I've been actively researching and trying to make it great. I'm growing 11 plants under LED light from bag seed. I've hit a few hiccups overwatering, nutrient burn/deficiencies but I'm having problems on 2 of my plants that I havent been able to find an answer for. The leaves are getting yellow splotches that turn dark brown quickly, starting at the lower fan leaves. I think it could be calcium deficiency MAYBE, they're in 1 gallon pots and I'm transplanting to 5 gal and adding some food grade diatomaceous earth to the soil. I'm using the fox farm soil trio and none of them contain calcium. I'm thinking about getting some Cal Mag after my most recent search but I'm not 100% convinced its calcium deficiency. HELP??

 

[bluenoserjoe]

Sure looks like classic calcium deficiency, check out this link.

Cannabis Plant and Pest Problem Solver: Pictorial

Here is a ready reckoner for Cannabis plant and pest problems. It has been put together by a master grower. I have edited for content and added to as needed. I hope you learn from this treatise. I have been doing a lot of research on sick plants and also helping out others a lot on sick...

www.420magazine.com

 

[Caitysezrawr]

Sure looks like classic calcium deficiency, check out this link.

Cannabis Plant and Pest Problem Solver: Pictorial

Here is a ready reckoner for Cannabis plant and pest problems. It has been put together by a master grower. I have edited for content and added to as needed. I hope you learn from this treatise. I have been doing a lot of research on sick plants and also helping out others a lot on sick...

www.420magazine.com

Thanks. I wasnt sure of the diagnosis because the pattern seems a little different. The link suggested dolomite lime on the leaves or adding into the soil. Have you used it in any soil grows? Or would you recommend using cal mag?

 

[bluenoserjoe]

I would be the wrong person to ask that. While I do recognize the def. I grow hydro so the solution would be quite different. I would add the lime to the soil myself. Don't expect those damaged leaves to repair them selves, but keep an eye on the new growth and uninfected leaves. If all your plants are in the same soil you can expect to see signs on the rest as well if not treated. Nothing to serious as yet but left untreated it quickly will be. The best of luck to you.

 

[jaynewbie]

Typical calcium issue

 

[Caitysezrawr]

Typical calcium issue

Great reference, thanks!