There is Canada distributors of spyder robotic Herpstat thermostat, you just have to order online.

Che is way better than a red bulb, they heat similar to a rhp which in my opinion is the best heating device. The che will help with humidity issues. Just make sure your snake cant come in direct contact with it, same with a red bulb. You do need to control the heat and a thermostat is the best choice but your dimmer dome would work in the mean time, you will just have to make sure you monitor your temps closely with a temp gun or digital thermometer with probe placed under the middle of che on the ground to make sure temps is 88-90, you would do the same with a red bulb. The reason you have to monitor more closely when using a dimmer is bc if the room temperature changes you will have to dim it more or less bc it won't automatically adjust like a thermostat will, you have to do this whether your using a red bulb, che, uth, or any heat device. If your going to buy a che then you should buy the highest watt you can find and dim it where you need it to be, better to have to much and dim then to little and can't do anything. Like I said make sure you use a digital thermometer with probe like an acurite 00891 or a temp gun, the analog thermometers are cheap and not accurate.

Unfortunately I don't have advice on the substrate bc I don't use it.

Sent from my SAMSUNG-SM-G890A using Tapatalk