"Foliar feeding"

[Wantin]

Ron, I have the 11-plant set up, i am using the 3-part flora series for nutrients, running 2-MH 400w for lights, and need a little info on "Foliar feeding"-not sure on the spelling. Anyway-using a spray bottle and misting the plants. Would this help/hurt anything? How often? If i do this should I use the same mixture as I do for my tank, or would you suggest a different mix. I read somewhere that using 1 tsp baking soda mixed with a gal. of water would be good for this because it would discourage fungus growth on my plants. What do ya think? Wantin to mist a bit.