I've been fighting the urge, but Spring Fever took over and I bought a HOVABATOR 1602N STILL AIR INCUBATOR + automatic egg turner 1611. I've seen a lot of folks on here who have this type of incubator. Any words of wisdom, anybody???????? Btw, does anyone know if these have built in hygrometers...the description said "themostat" but didn't mention a hygrometer? Will I need to buy one separately? Can I get one at the feed store?