Brown Spots..."pics"

NOT SURE WHY ITS DOING THIS. ITS ONLY ON A FEW LEAVES. 3 WEEKS FLOWERING. LIGHTS 3-4 " AWAY,USING CFLS,MYLAR, MINIMUM PLANT...
68-71F 49% HUMIDITY

hello??????????????

tuff call....maybe a better pic???

Ganja Guerrilla's Hall of Marijuana Plant Abuse, give this a shot.

if you have a magnifying lens check for spider mite - just in case.

no mites.......im using 1 gallon pots. is that ok?

could be burn from foliar spraying, or if you are overnuting them they will burn like that. Ph test your solution, make sure your only using 1/4 nutes, add a couple drops of superthrive and they should be ok. That is not bug damage. are you foliar spraying? Try lowering your concentration. I had similar issues just using too much superthrive.

Ozone damage

Ozone damage typically found near the generator. Although a rare problem, symptoms generally appear as a Mg deficiency, but the symptoms are localized to immediately around the generator.

Figure​