Check the vegetables daily to make sure they are fully submerged in water. If they have risen above the water, simply push them down so they are fully covered by the water or add more water to cover. If any white spots form because the veggies rose above the water, do not worry. Remember, this isn’t harmful. Just scoop out the vegetables with white spots and push the rest back under the water. They can last at least 9 months, or longer, in your fridge.