Hello all! Johnny currently has crappy stick on hygrometers and I would like to replace it w/ a digital model. It doesn't have to be run off of an app or super fancy, just true and reliable. Which ones do you use and recommend? The hygrometer now reads that the humidity is within range but I find the substrate a little too dry/dusty on occasion, its 1:1:1 ratio of topsoil, sand and peat if that helps. The enclosure size is 6x3x3. Thanks for the help!