Saving/storing nutrient mix

this water cooler youre talking about, is this one of those water coolers they have in offices and shit with two spouts one hot one cold? if so i wouldnt do it because inevitably you’d get biofilm build up and clog the spouts.

If you are asking if you can take nutrients out of their original bottles to put them into a cooler instead so you can just push a button to empty them into a cup, I don't see that harming anything. Moving liquid from one container to another should be fine. If you're asking if you can pre-mix multiple nutrients in concentration and then store that - I would probably look online for some information on the nutrients you have and if they can be mixed in concentrate in the first place. I would imagine the concentration of salts might cause some issue if you mix them together and leave it, I would avoid it tbh.