I have the coconut fiber loose substrate and I have had it for a little less than a month. I have noticed what looks like white web-like mold in and around the corner of my enclosure where the alfalfa pellets are located. I personally heard the coconut fiber would not mold. Is this because of the alfalfa pellets? I am going to buy a new batch of substrate if this is the case and throw out the alfalfa pellets.