I use DAP KITCHEN & Bath Silicone to get probes and wires to stay in place under substrate... (snake has to be out for like 30min cause it stinks). Never tape (incase I didnt tell you).
Dont get to crazy with all the Thermometers hahaha that snake will be all tied up in wires in a couple weeks when it starts coming out at night hahahaha.
Try and keep things as simple as posible. When it pisses all over your going to be pulling it all apart to clean.