cant see too good, but the spots seam to be inbetween the vains , fist is to check the ph of the water goin in then the run off from the pot, should be at about 6. then if they are try a flush then some calmag in the nute regimin, alot of the same problems are coming up in soil greowers lately, the brown black spot inbetween the leaves. this is a problem with either nute lock out, or calcium deficency. cause could be many things from soil to ph, to salt build up.
MadSativa Reviewed by MadSativa on . Dont read unless your going to help me... Your Equipment: .1) Type and wattage of lights. six 150w CFLs .2) Distance from tops? 6'' .3) Reflector type? White heat resistent painted sheet metal. .4) Is there a consistent fresh air supply?yes .5) Do you have an exhaust fan and a circulation fan?yes .6) What are the bulb wattages, kelvin ratings, and schedule? 150w-2500-3000 20 hrs on 4 off Your medium: .7) Specific brand and type of soil. Lowes Top soil, mixed 60/40 with perlite Rating: 5