Does Vita Chem need to be refrigerated?
No, neither Vita Chem Fresh nor Vita Chem Marine needs to be refrigerated. They do need to be kept in a cool location.
Will Vita Chem have a longer shelf life if I refrigerate it?
Yes, it will extend the shelf life of both vitamin formulas if kept refrigerated.
How does my fish benefit from me adding Vita Chem Fresh/Vita Chem Marine to the water?
Fish have extremely permeable skin and do absorb the vitamins via osmosis and benefit from the nutrient intake. The invertebrate animals in many aquariums today will also benefit from adding Vitamins directly to the water.