Humidity and Substrate

[Skittles1101]

I'd say 100w heat bulb is making the temps far too high....but the heat lamp in general is the cause of the lack of humidity.

These can be found at Home Depot, Lowes, and Walmart as well. Analog thermometers and hygrometers are dangerously inaccurate.
http://www.amazon.com/Chaney-Instrum...0065516&sr=8-1

If you are going to keep the lamp (which is porbably unnecessary since you have a UTH) I suggest this, also found at Home Depot and Lowes.
http://www.homedepot.com/h_d1/N-5yc1...atalogId=10053

Do you have a thermostat for your UTH? If not I suggest this.
http://www.amazon.com/Hydrofarm-MTPR...4&sr=8-1-spell