Spotting On Leaves

Hey guys. My first grow here. This one is about 9 weeks old, in miracle grow soil (I know I know), and getting water every day. Always been on a 18/6 light schedule with CFL's. Just the past couple days these spots showed up. I figure its some kind of deficiency, but not really sure since im about 9 weeks new to this also. Any and all input is very appreciated.

looks like what happened to my plant. there is a small bug called a thrip that carries a disease that infects and kills some leaves of your plant. its untreatable but i was able to completely stop it once it hit the flowering stage. when and if the leaves get wilted and look really bad, prune them halfway down the leaf's stem. also if your plant is with others, repot into seperate soil to prevent further infection to other plants.

also try using a soapy water mix to spray on bottoms of leaves.