What is the best way to thaw frozen food? Does it matter if I use water from my aquarium or can I use freshwater? Should the water be cold or hot(does it affect the nutritional value?)? After I strain the the frozen food, can I put it in a zip lock bag and add a couple of drops of selcon and store in the refrigerator ? Can I do this in the morining and leave it refrigerated until the evening when I do my second feeding?