In flower, Extra dark won't hurt. Extra LIGHT will.
In veg, too much dark can cause flowering, and the delay you described.
psteve Reviewed by psteve on . Light Cycle Interuptions, Oh No! *help stinky* Today upon arriving home, I found my plants in the dark... the power must have gone out. This prompted some questions. 1. Just how bad are light cycle interruptions during the veg phase? Not nearly as bad as if occurred during flower? 2. If darkness occurs when the lights are supposed to be on, this is not nearly as bad as light interrupting the night, correct? If the power does go out, is it best to just turn it back on and the plants will just think a cloud passed overhead? 3. Rating: 5