what are these dots

the necrotic spots are usually standard cal/mag deficiency, which is what it looks like in your case (tho it kinda hard to see in ur pics)
 
i agree,i had some cal/mag def and thats how it starts.keep an eye on your ph,too much or too little will cause this(i keep mine at 5.5-6.0,5.8 is best or it could be that your nutes doesnt have anough of it,try adding some calmag or some other micro nutes with calmag in it,best of luck
 
thanks
my other plant that havent any spots and she looks beautiful although they are eating in the same reservoir
is temperature the reason of problem ?
 
23072010384.jpg

this is snow white, she is beautiful, but the other plant have spots, why that is happened i dunno :S

i added some calcium, magnezium and sulfur
 
First grow, bagseed starting 9th week flowering (I think) I too was wondering what these dark spots are on some of the fan leaves, looks a little different tho. I have been feeding plain water the last few waterings. I think I started to flush a little early but am afraid to give more nutes now as its not too far from harvest.
 
your and my dots are different, i have them on leaves tips. before my spots appeaer there is some yellowish color on tips.. what temperature have you dude?
 
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