Rust spots on leaves

kratosxxl

kratosxxl

Well-Known Member
Hello growers. Does this looks like a calmag def ? Its on top layer mature leaves or what else it can be ?
Plant generally looks healthy.
 

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Last edited:
So epsom salt ?
or just add botanicare calmag ? For calmag and iron ?
I want to keep them great :) im 2 weeks in to flower
 
Wow! Not sure how much to suggest adding. I use, literally, a pinch in my bins that hold 4 gal each.
 
Epson salts won't help at all in the case of calcium deficiency
Personally I just up the PH a few points, and up my calmag
Its rare to find a toxicity with calcium and magnesium, so I wouldn't really worry about going too far with that.
I run 250 ppm (500x) of just COCO cal (pretty much calmag) then I add my two part base ontop of that.
 
ÒÒlegilizeitÒÒ said:
Epson salts won't help at all in the case of calcium deficiency
Personally I just up the PH a few points, and up my calmag
Its rare to find a toxicity with calcium and magnesium, so I wouldn't really worry about going too far with that.
I run 250 ppm (500x) of just COCO cal (pretty much calmag) then I add my two part base ontop of that.
Click to expand...
thats what i did :) also do they look pale to you guys ? H&G support recommended to up A+b ,0.5 ml per gall and he said its a rust fungus but i cant scrape it off so i dont think is a fungus
 
ÒÒlegilizeitÒÒ said:
Epson salts won't help at all in the case of calcium deficiency
Personally I just up the PH a few points, and up my calmag
Its rare to find a toxicity with calcium and magnesium, so I wouldn't really worry about going too far with that.
I run 250 ppm (500x) of just COCO cal (pretty much calmag) then I add my two part base ontop of that.
Click to expand...
also do you know correct ph range for max calcium uptake ? some charts say 5.8 some say 6.1
 
kratosxxl said:
Interesting that mag is lockout at 5.7-5.8 support recommended me to keep PH at 5.7 , and my ph drifted to 5.5-5.4 couple times
Click to expand...
These are optimal levels is all, of course you need to be in the white with some nutrients sometimes, esspecially when you want to uptake another nute in particular. Just try not to go in the red
 
ÒÒlegilizeitÒÒ said:
These are optimal levels is all, of course you need to be in the white with some nutrients sometimes, esspecially when you want to uptake another nute in particular. Just try not to go in the red
Click to expand...
I think i went to red couple ofctimes thats what happening to leaves. Also i have 2 bluelab ph meters and both showing different reading right after calibration. So its garbage
 
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