I call it a hygrometer because that is what they call it for tereriums for lizards and snakes and such..
Here is an example
I think I am going to move away from my current design untill I can get more equipment for it. I am working on moving to a curculating WC/
ebb and flow. (Going to try to make it interchangable.)
The question I am having is the strength of OSB in a 6" x 4' section. I am not wanting to have bow out.. I could use a HDF or MDF but not sure about them getting wet should there be a splash here and there..
I will post some picks later.