Hey I have Mantellas also, What are your temps in the tank Day? Night? How much cover do u have and how many times a day do u mist. You have remember that Painted Mantellas are a highland speices of Mantella and they like it fairly cool, meaning the temp should not go above 80 degrees for long. They will hide constantly (usually hidden in tunnels they dig to keep cool). Let us know a little more aobut your tank and maybe we can help better.