Review on 🌿 Optimized Exo Terra BioDrain Terrarium Substrate for Aquarium, 4.4-Pound by Meghan Frye

Used these to create the water level in my crested gecko tank, in addition to a biodrainage mesh with coconut shells and some moss on top. With daily spraying, the humidity is maintained in the range of 70-80. I've had the setup up and running for over a month now and haven't seen any mold growth and my godfather is happy and healthy.