We filled Squirts (new) 4x8 enclosure with new coco coir about 1 week ago - it hasn't been stirred since as he is not in it just yet. We have plants growing on one end with a florescent tube light on for a majority of the day. We noticed today there is a thin layer of (what seems to be) white mold over the top layer. Does it need to be completely removed from the enclosure or is it safe to just mix it in? Or is it okay to just remove the top layer?? Not sure what caused this - would it be from no regular lights over the enclosure? Here are two pics - not sure if you can make it out or not.
Thank you!
-C