leaves weird spots.. ideas.. ?

Ph? Lights? Nutes? Pics look like either Ph spotting or bugs. Shouldnt stress your plants switching light schedule unless you have a huge increase in heat and even then that doesn't look like heat stress

 

Or lack of phosphorus now that I look a second time. More info!!

 

Don't worry about it and LITFA. The leaves look a fine green color - dont aim for absolute perfection because you'll never get there.

J