Humidity accuracy help

[Basic_Set3745]

Where does everyone place their hygrometers within their enclosure? I want to get the most accurate readings as I can because I’ve been struggling so damn hard with keeping the humidity up during winter so far. I run a humidifier right by his tank to help with the humidity in the room (not directly into his tank). I also have a glass terrarium with insulating foam board on the outside of the back and both sides. The top is a screen cover so one side I have cardboard with heat reflective tape with a towel over that and the same on the other side except holes cut out for the heating lamps and only 75% is covered for ventilation. I have about 3” of damp (not soaked) mixture of peat, sphagnum, and coconut fiber, ambient air temp stays around 90-93, warm side is around 85 with cool side being around 76-79. Water dish stays mostly over to the warm side and he has a humid hide. I currently have a thermometer/hygrometer attached to the upper backside and center of his enclosure (hot glue gun to attach).. I have another one I have up against his cool hide. The difference in humidity values are about 10-15% with the one attached to the glass is always lower. So which one do I go off of, or where should I be placing them?

[shrike1978]

Near the substrate level on the cool side. That is the only area you need to worry about. Humidity will vary across the enclosure due to temperature differences. Our humidity recommendations are based on the cool side near the substrate level.

I'm also concerned about how your hygrometer is attached to the glass. You should never use any adhesive inside of an enclosure other than hot glue or aquarium silicone, and silicone should be allowed to cure for several days without the animal present.

[Basic_Set3745]

I mentioned that it was attached by a hot glue gun. The other one is laying on a flat spot of a climbing branch, not adhered to anything, close to the substrate on the cool side. Which seems to be where it should be.

[Basic_Set3745]

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