It sounds like maybe your male is splashing water all over the place. It he maybe too hot? Are you SURE about mites?

I don't think that even the digital gages measure accurately. I have humidity readings all over the place. One is currently reading 31%, the other reads 53% These gages are less than six feet away from each other, and in tanks with nearly identical set ups. Both are newer VE temp/hygro's. My others, are of no help either. The others tend to read in the 50%'s FWIW.

You are in NM too. I've never visited Albuquerque, but I doubt all that humidity is coming from the air.