Leaves curling + brown spots on leaves

[cycoboodah]

I'm sure you guys will know this.

Growing on 2x600W, coco + perlite (70/30), AN nutes.
I'm having slight humidity issues (40 rh), everything else is quite perfect.

The ladies are ending their 5th week of flower, flushed them 4 days ago. Things didn't get better.

Please help.

 

[cycoboodah]

I'm not sure how posting pics work on this site, so I'm just gonna url them...

http://imgur.com/sjTISGN

http://imgur.com/3Jeiqyy

http://imgur.com/08uGoTt

 

[Douglas.Curtis]

Severe mag deficiency for one...

 

[cycoboodah]

Severe mag deficiency for one...

so you think calmag treatment should do the trick?

 

[Douglas.Curtis]

so you think calmag treatment should do the trick?

I don't see a need for calcium or nitrogen, so no need for cal/mag.

Epsom salts is all you need, make sure it's "Magnesium Sulfate." Add .5g/gallon. Probably won't need to apply any more after that, unless she's really a mag hungry strain. I've used up to 1g/gallon on some strains.

 

[Can of Bliss]

so you think calmag treatment should do the trick?

What is your feeding and run off pH?

 

[cycoboodah]

I don't see a need for calcium or nitrogen, so no need for cal/mag.

Epsom salts is all you need, make sure it's "Magnesium Sulfate." Add .5g/gallon. Probably won't need to apply any more after that, unless she's really a mag hungry strain. I've used up to 1g/gallon on some strains.

I will try that. Thank you!

 

[cycoboodah]

What is your feeding and run off pH?

Around 6.0
Run off just a bit higher (up to 6.2)