Selkotanswered grow question 2h ago hey 👋
u can prepare your mixes 2 to 4 days before watering, even 5–6 days for mineral fertilizers, as long as you remember to stir once a day
but no more than that. beyond this point, and even faster under poor storage conditions, salts will build up and crystallize.
result is poor absorption by the plant, possible root lockout, and in any case some elements will be neutralized or inhibited