For a still air incubator, you'll want to keep the temps a little higher, 102 is actually recommended for the still airs. You want to make sure you are measuring the temperature at the top of the eggs (I used the thermometer that came with the LG and just laid it on top of the eggs) because without a fan to circulate the air you will get layers of heat, it may be up to several degrees cooler on the bottom of the incubator than up higher where the top of the eggs are. Three times a day is adequate for turning the eggs, and there have been studies that show after day 14 turning isn't really necessary at all (although I still turn mine right up until lock down, which is the last three days before hatch).
You probably should invest in a hygrometer. Many people have had luck finding them for really cheap at
Wal-Mart, although the ones by me didn't carry them. I got an indoor/outdoor combination thermometer and hygrometer from Menards for mine. You will probably also want to get another thermometer in there as well, the ones that come with the incubator are notorious for being inaccurate (though I used the one that came with mine and my hatches have been decent, I may have just gotten lucky to have a close-enough-to-accurate thermometer get packaged in my box).
There are several schools of thought on humidity, and it's tricky to know which one will work best for you and your individual incubator without doing a few hatches yourself. For me, keeping the humidity around 35-40% for the first 18 days and then bumping it up to 60-65% for the last three days worked well. Out of 18 eggs that made it to lock down (from 19 that were fertile) only one didn't hatch for my first hatch. My second hatch was slightly less successful, but I attribute that largely to it being an experiment in staggered hatching...the temps for 4 days mid-incubation was 65-75% while the first set hatched, then I ran it very dry (20-30%) for a few days after that to try to make up for the few days of higher humidity. I had 4 eggs hatch on their own and one that I had to assist because it was shrink wrapped. Three more eggs never pipped and when I opened them they all appeared to be shrink wrapped in the membrane Shrink wrapping happens when the humidity is too low and too much liquid evaporates from the egg...if the humidity is too high during incubation then there is a risk that not enough liquid will evaporate and the chicks will drown when they make the first internal pip.
