Yep, withot sleep cannabis will have a pretty effed up metabolism and a plant with an effed up metabolism will never grow to its fullest potential.
18/6 is optimum.
Everything on planet Earth lives by a "circadian rhythm", that is, a period of activity followed by a period of sleep.
Without sleep a plant can not finish its photosynthesis cycle and have a correctly functioning metabolism.
Without a correctly functioning metabolism, a cannabis plant can not synthesise cannabinoids properly and this is no doubt why your buds taste strange - incomplete cannabinoid synthesis.
24/0 could only be recommended by people who don't understand photosynthesis or how plants function - (or both principles.....).