blue bear im using liquid life right now with some AN like carbo load and im using CAL MAG and others i cant recall at the top of my head right now.but yeah thats what i was thinking of doing since my res is half empty by the end of the week i could just fill it up and add half regular nutes and ill be good to go but other people here are saying not to cause u dont know how much of each nute is used so i dunno what to do ???peace bro