Nutrients

I just started to give my 3 week old plants some nutes (DNF a & b). I spray bottle water them about twice a day. How often should I be giving them the nutes:

1) every time i water (twice a day)?
2) every other day?
3) suggestions please.....???

FYI: I've also put in a 1/4 of what the receipe calls for to the spray bottle of distilled water.

I am using DNF.
I give my plants a little bit less than what the bottle calls for. I only give nutrients every other watering. I found that it is very east to burn with DNF. Every other watering plus periodic foliar feeding at 1/4 strength has worked very well for me so far. The plants are very healthy and green looking.

I give them nutes every time on every other day, with intermittent flushing.
But, I use Fox Farm Organic. I rarely foliar feed though.