I love this discussion.
The perfect (and it is debateable) scenario for cigars is 70 percent relative humidity and about 70 degrees. Some people will go lower on humidity, and it is often said that if you are doing aging, 65% is better.
1. High temps are bad. High temps are what allow eggs to hatch. It doesn't matter if the humidity is high, too, high temps are bad. Did I say that enough? High temps are bad. 75 degrees isn't something to worry about.
2. Don't soak the wood. It can cause it warp and ruin the seal (not the kind that barks) of your humidor lid.
3. Yes, the shot glass full of distilled water is a good idea. Do not bother with PG when trying to get the humidity up as the PG doesn't help with that at all.
4. If you humidity is too high, then yes, us a PG mix solution, but wait until you actually have a problem. Many places don't have near enough humidity to require PG. If you live in Houston where humidity is 120% all the time, then you need PG.
5. Be patient. It takes time for the wood to absorb the proper humidity, and when you add cigars it will impact the level for several days until it stabilizes.
6. Tap water is very bad. No, don't use it. Ever. Tap water is very bad. Do I need to say it again? Tap water is very bad. Use nothing but distilled or distilled mixed with PG (see earlier statements about PG).
7. Don't complete saturate your humidrol with water/PG mix if you have high humidity problems. You should allow enough capacity so that the PG can pull humidity out of the humidor if your humidity is too high and it can't do that if you saturate your humidrol.
OK, let's do this again soon.