So after some testing it turns out having the probe closer to the substrate is actually giving me perfect temps ranges and are far more precise (more than I expected) than having my probe hang 4-5 inches below the rhp.
I'm still concerned about my bp being able to pee/poo on the probe and mess with readings. The way it's secured I think he might not be able to, but I I'd love some second opinions!
Here is Placement A
The tstat probe is tucked behind the root decor and thermometer probe wire which I hope will block off access. The probe is hovering just above the substrate and which has so far, given me the most accurate temps. *Note, it will be ziptied. For now it's just loosely tied in place for testing.
And here is another placement I'm currently testing. I admit I'm still a little weary about my bp climbing up the wire like that and either pulling it down, or touching the rhp. Was thinking of zip tying it to the thermometer probe wire.
Here is Placement B
and of course, placement C was 4 inches below the rhp, which kept it the most out of reach.
I mean all methods work and keep my temps where they need to be at, so I'm being super nit-picky now. Maybe it's my being crazy antsy from having my bp coming so soon? Anyways, if it turns out placement A is fine and you guys think it's unlikely to be used as a toilet, I may go with that.