Heating Pad

[DonLisk]

You have a few choices for creating a drainage layer. The drainage layer is for allowing natural moisture from misting to filter through the substrate (usually coco-fiber such as Eco Earth or Plantation Soil) and collect below for evaporation or siphoned removal.

Aquarium stones are fine or Hydroballs which should also be available at a good pet store.
Once you place in about a 1 1/2 inch layer of balls or stone, cover it with a piece of window screen material or landscapers weed barrier material. The material will allow for moisture to seep through and not allow the soil to mix in with the stone or hydroballs.

Have the screen material slightly larger than the area your covering to have some come up each side but not higher than the depth of the top substrate. Also allow for an area where you can lift up the screen and slide a siphon hose down into.


You can also make a drainage layer from eggcrate which is the louvers in a ceiling light. The is a sample of this method here: http://www.frogforum.net/vivarium-te...se-bottom.html