Don't get me started on " pet stores ladies" lol

if the Pacman is 1-1.5" big crickets are bigger the the distance between his eyes.... Depending of course on your definition of big

spring water and distilled water are 2 completely different things, please clarify.

Humidity - see my post above. It also helps to cover the screen top with foil, cut the hole a bit bigger then diameter of a lamp to put it on. I usually tape the foil to the screen from outside of the tank.