I understood ya mate don't worry lol. Canna recomend using within 24 or 48 hours of making it up, can't remember which sorry. Don't know if that is writen in stone cuz i know alot of peeps like to make there nutes up and run an air stone for a bit. Maybe someone who has let the mixture stand for a while can chime in, i use mine as i make em. Not much help really am i?