haha this was a good laugh.
Ok so we need to know a few things. What stage of growth are you in right now? Veg or flower? In veg, you will need more N than P or K. They might benefit from P or K but that wouldnt be the first place i would start. Im going to assume your in veg. If your in veg and you are feeding a good N nutrient, and your following the instructions and not overfeeding then you have another problem. Your problem may be a N deficiency but theres a 90% chance its probably not from a lack of feeding.. What happens is, if your Ph is out of whack, that is, its not in the accepted range nutrient uptake is reduced or comes to a halt. Its called nutrient lockout. (im assuming your growing in soil) it should be between 6.2-7.0 that is ideal, 5.8-8.0 is tolerable. You could also have excess salt buildup from old fertilizer in the soil that hasnt been used.
My suggestions are, flush the soil with fresh water, put 3x the volume of your growing pot in and flush out the soil. After that, give it a little time and test the ph. You can use dolomite and sulfur to raise/lower the ph of soil. You can find this info on here do a search.
If you do that and you honestly think its a deficiency, get some better nutrients and test different things on different plants. dont up the dose by 2x and feed all your plants..do it to maybe one and see if she gets better.
Again, im giving you info based on what you have told us, which is not much. More info= more responses= you fix your shit and get back in business.
And remember.. DONT DO WHAT EVERYONE THINKS YOUR GONNA DO MAAAAN and FREAKOUT