Because everything is mixed and will eventually precipitate, 10 days was the max for me in my tanks, stirring at least once a day. Because you've got a very small, single operation, I'd just mix up four gallons, and stir it each time you water.ohh ok ya i wasnt sure if could leave it for next feeding thought had to use it all each feeding\watering, how many days it can last with nutes in the water ?
If you notice solids at the bottom of the pail, it has sat too long. Before you know it, the plants will be drinking by the gallon.