I have ordered my Herpstat but I do not have the cash to order a 2nd thermostat as a backup. This is my idea so please tell me what you think...

1. I plug my UTH into my Dimmer.
2. Set the dimmer level slightly higher than it needs to be to
achieve say 95 deg.
3. Plug this into the thermostat that is set to 92 deg.

With the Thermostat at full output, it should be able to achieve the target temp (92) while at the same it will be capped at 95 deg by dimmer. This would also solve the problem of the in tank temp probe getting water spilled on it or otherwise being cooled and the temp running wild.

Am I making sense to anyone but myself? What am I missing?