Quote Originally Posted by casper View Post
I have no way of dialing in the exact temp on the surface of the substrate.

You know of a good temp to set the UTH at to get a good temp of the substrate without the use of a temp gun or another thermometer probe? I have to make use of what I have until next week then I will have more money to spend on more equipment.

I had to plug my heat lamp back in because the ambient temps are in the lower 70's. Now I will have humidity problems again and now I wish I wouldn't have spent the $50 on that UTH and thermostat. This is getting very frustrating.
That all depends on your own situation, your house temp, weather, etc. There's no way of guessing unless you have the proper equipment to test it out.