This is because your enclosure has an open top. Soil won't do anything that the cypress mulch isn't already doing. Humidity is increased when evaporated water is captured and held. With an open top, your evaporated water is just dissipating up and into the room. Soil doesn't evaporate any more water than any other material.@Tom the humidity level won’t stay at 70. Can I add top soil to the cypress mulch to retain more humidity?
Pebbles poops everyday during the soak but how would i know if it’s peeing or not?