what nutrients. to much/to little

So here are pics of some of my plants, i gave them a low dose of growbig and bigbloom a few days ago. some of them look like they are still nutrient deficient and some of them look burned. you guys be the judge please. also while i'm at it, how often should i be giving my plants nutes?

bump thread

More N, every OTHER watering.

Follow FoxFarm's feeding schedule and stick to the amounts ACCURATELY.

Modify amounts when you feel like you need to.

thanks, but most people say to use like 1/4 or 1/3 of what fox farm says for the first few weeks, and when i had leaves curl over i thought it was to much. but i guess its just too little.