I've been making my own kifer water for a few months now and something is going wrong. I think I may have contaminated 2 batches of grains. (Fixin to get started on the 3rd) My grains are getting a white film around them and leaving particles in the water. I really dont know if it's the water or utiensels or what. I'm going to start using filtered water and clean the jars and utiensels with boiled water before use.