Ok. i have a few questions? i have been feeding frozen food for a while and was wondering? 1. I have a big frozen flat piece of food that i just a take a chunk off of every time i feed. I have noticed its starting to get ice crystals on the food. Is this water/ice ok or should i rinse the food? The food is high quality and the manufacturer says it doesnt need to be washed? 2. Also i have some PE Mysis and Cyclopeeze squares that i use but only need about an 1/8 of a cube each time i feed. Whats the best way to thaw a small amount of this food and refreeze the rest?