Misting leaves with a diluted feed is fine on an auto in the first three weeks, but once buds form any foliar application is asking for mould in the dense parts. The window is short enough that most people skip it, and the plant gets what it needs through the roots if the medium is right. The seedling stage notes on https://turboautoflowerseeds.com cover a light kelp spray for the first fortnight and then say stop, which is sensible. Water on the leaves under a strong light causes burn spots.