Dark brown spots then dead leaf

[jamessr]

I believe this is rust and not a nute problem. There are nute co. that sell stuff too kill the rust that attacks MJ. Advanced nutrients is one.

good luck, just my pennies worth.:thumbsup:

[WashougalWonder]

Been seeing a lot of this problem in various places on this site. I had it too, but it was because I over fertilized with P. It does look like rust, but does not have the fuzzies on the bottom of the leaves that is supposed to go with rust.

I finally stopped giving any fertilizer except a teaspoon of 16-16-16 when they go into the flower room sprinkled on top. Since then, everything stays green with just a little yellow to the sun leaves as it should be.

We are over fertilizing and over watering.

[sarah louise]

Don't sweat the Chlorine, or the Chloramine.

Ahhh the sweet voice of reason... and you don't need to adjust the pH to wash the pots out either :thumbsup:

[stonner2k]

Ive got the same problem with my 2 plants in veg right now only mines not hydro and i got them under a 125 watt plant light. the leaves have been dieing out each time a new layer or the leaves start to grow above. all the ones die out below so now i have a 12 inch stem with a set of 2 leaves and 2 more appearing but the rott has already started on the ones on top? any suggestions?

so what was the out come did anymore leaves grow back or what? is there any other reasons for the leaves to go like the pics at the top of the page sorry forgot who posted them

[WashougalWonder]

It is Mg deficiency. I had same issue and used CalMag to cure it, but only 0.5 ml/gallon. Some ladies don't like lots of it and they throw nanners.

[Weezard]

It is Mg deficiency. I had same issue and used CalMag to cure it, but only 0.5 ml/gallon. Some ladies don't like lots of it and they throw nanners.

I did not know that., WW
I have seen some Phosphorus lockout when I used too much Calmag.

But, I assumed that my last hermie was due to my neighbor's porch light.
The bottom branches caught the light and only the bottom branches popped nanners.

If it was the Calmag that pushed her over the edge, that's great news!
Be a good way evoke some pollen, yah?

Aloha,
Weeze

[WashougalWonder]

Just a personal observation Weez. Not every species will do that, is interesting how one will consume more of a given additive than another, in some cases what is good for one is bad for another.

I have no other data to back that up with, so not set in stone Dude.