Home / GreenPlanet Product Support Forum / Can I store my pre-mix for a few days? / Reply To: Hi again, if I pre-mix a gallon of Medi One with any of your other stuff (silica, pro cal, ph down) and have it sealed in a plastic container at room temp of 18°C can it sit for a few days? A week? I’m planning to have someone look after my plant while I go away for a week. Thanks
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