Little help here, weird spots appearing on my leaves...

Potash deficiency? Thats really my only guess, seeing if any fellow growers could help me out.

2.5 weeks into flowering...

the lime green means it wants Nitrogen
the singed tips on all the leaves means they want Potassium
and the little spots means it wants calcium

just feed with fertilizer at 1/2 strength(900ppm-1500ppm) every other watering, any more or less will result in slow growth and small leaves

thanks for the help man