In these photos, the runt of my litter has started to grow white mold. i started out in these grow cubes for about two weeks before finally cleaning and putting the caps on them. there was already the layer of green on them prior to being covered up. anyone know what is causing this. and or what can be used to help curve any of my other, more healthier plants from getting this issue. i am in dire need of help. plants in need more than me.