Hi Jack! Only thing of concern is the under substrate heat pad. Even if small, according to you it's located where frog "sits." Well think the frog "sits" there not because it's looking for heat; but because that's where the fern plant (which provides overhead security) is located. 33C (91.4F) is way too warm for a Pixie to be sitting on and if looking to cool of; it will just try to bury deeper according to it's instincts. My recommendation is to move or at least turn off that heater until you can move frog to new home and do not place any heat mats below the substrate in the next one. Good luck !