Temp probe Placement?

[Brownspidey]

I have a plastic tub rack. Each tub has it's own individual thermometer. I use coconut substrate. Should my thermometer probe sit lower in the substrate, closer to the bottom of the tub, or sit higher in the substrate? If I made sense?


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[SDA]

What are you using that to read? If the UTH temp inside the tub then it needs to go on the bottom inside of the tub above where the UTH is. You can use silicone or hot glue to secure it down but no tape.