how long until nutrient mixtures go bad?

BUDies

Active Member
Ive always known you can mix up nutreints, let them sit for a little and just have to re ph. But the guy at my local hydro store told me i could let my complete nutrient mixes sit in water for a couple days and just need to mix it up and ph before use, But i was wondering if there are any nutreints thatll go bad in the water faster than other, like organic live bacterial nutrients and so forth.
 
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