problems with tub setup

I'm having problem s with my tub set up any help would be appreciated. I started out wit a 30 long and had problems with my humidity and. Keeping the cool side warm at night so I had a red light running 24 hr s . So I switched to a tub setup I purchaseda 3 foot by 2 deep and 1 1/2 hi I made holes with a soder gun and placed a big heat mat on the Sam side and a small one on the cool side both on dimmer with thermometer probes on both the warm side reads 90-92 and the cool side is 80-83 I have two identical hides water bowl and rock/branch for shedding the only problem I have besides the humidity being 65 but a few more holes and ill have that perfect. M ambient air temp is right around 72-75. Its in my living room warmest part or my house right around 70. I have had him for two months he's has patent and she'd fine and went to the bahroom he's abouth 2 ft and the pet store had him on hoppers I bumped up to full six mice slowly and probably onto small rats soon I just wanna know if this is OK or the air temp is to low place respond

the air temp should be higher, 78-82 is recommended.

Make sure that you keep a close eye on the heat mats, they should really be on a thermostat if at all possible.

This one is good

http://www.amazon.com/Hydrofarm-MTPR..._bxgy_ol_img_b

and these are better

http://spyderrobotics.com/

There both on thermostats the cool side and warm side mats the here temps stay the same all day and night they fluctuate between 2 degrees at the most. Any suggestions on hot to bump up the air without sacrificing all day and nigh lighting because wig the lights on all day I can obtain perfect temps throughout but then out goes humidity unless I continuously spray or moistene the ground even with the top partially covered