using it frozen without vac sealing, just use it up in a week or two. i dont know if its better or worse than any other food, but it is another option. if you already have a couple of types, when you use one up and its time to buy more , then maybe try repashy, or else you run the risk of going down the rabbit hole like most of us have, and have dozens of different fish foods. a little variety is good, but too many becomes an expensive collection.