Possibly ignorant question. I should just follow directions and leave it at that, but convenience sure is nice. Really hard water here, so I always add a conditioner to the water before watering my plants. Then of course my different fertilizers if it’s that time. I would LOVE to have some gallons premixed but the conditioner and fertilizer both say use directly after mixing. Is this really necessary? The conditioner and/or fertilizer is no good after 24 hours or whatever? Thanks 😣