I need some advice for my humidity for my boa and ball python. They both have 50 watt infrared heat lamps and the hot spots are at 90 and cool end around 80 F. My humidity gauges always indicate around 20 percent humidity which is why I use spray bottles daily to bring it up but it dries up really quick. They have screen tops so sometimes I try putting something over part of the top to keep moisture in but it doesn't really work like that. How do you guys keep your humidity ideal without having to be like me and constantly watch and adjust?