If your spraying with carbonated water you still have to be careful. If you spray your plants 2-3 times a day there is going to be carbonated water hitting the soil... And C02 is heavier that oxygen, so make sure you have fans blowing air under your canopy.
You should never be watering lightly 2-3 times a day, your plants are starving for water.
Feed once THOROUGHLY every 2-3 days. Stop folliar feeding for now, Feed some plain water, soak the soil thoroughly, then LEAVE HER ALONE. Your probably overdoing it trying to fix her. Give her roots some plain water and give her a day to relax.
Whats the humidity in your place? Sounds quite low.