You need pics.
Are they large blotches (mold, pH, calcium imbalance, etc.), small patches/trails (thrips), or little speckles like paint overspray (mites)?
Do you see webs under the affected leaves?
Do you see small tan larvae on the leaf surface (~2mm long, hard to see, hang out in the veins)?
stinkyattic Reviewed by stinkyattic on . Gray spots On one of my indica plants there are a couple of gray spots on it, what are these spots? Bugs possibly? Rating: 5