yea take photos under normal lighting, not a yellow light.
all the other questions above are key,
nitrogen overdose isnt cuasing the specs of shit on your leaves, but im guessing when you take a photo with normal light, nitrogen overdose will be obvious.
the specs are probably micro nute deficiencies. hard to tell with the shit pics and lack of info.
welcome to RIU tho, take some better pics, give us more info, and lets see if we can get those buds to grow more