I hope it was a typo but 24hrs of light and 4 hours of darkness? Not saying itll cause problems .. buy why?
This in my opinion should help heal your plant.
Stop feeding, flush lightly , double check your ph, temp, humidity. Make sure temps dont drop to low at night.
Buy a temp gauge that tells your all time low and high for the day. Dont spray your plant, its unneccisary and can cause burn. Just dont take the chance. Give it 2-3 weeks and maybe even water it less or not on a schedual, water on a needed basis. A good way to tell is wait for it to dry out, feel the weight of the pot, when it reaches that lightness again, water thoroughly and wait till it reverts to its lighter weight before watering again. There a few possibilitys of what it could be and it could simply be stress.
Just try it out, nothing wrong with giving it some time of stress free living. In face people need the same thing some time. Kudos, inbox me if you need something. Ill probably reply faster.