Yellow Spots?

so, my plant is 2 weeks old and its under 42 watt CFL light 24/0, stays 78-82 degrees, it gets watered every other day, no added nutes or anything.. and as u can see in the pics theres yellow spots on one of the bigger leaves? Any help on what these might be or how to fix would really help.
(sorry about the picture quality my camera's not good with close ups)
Thanks