Hey, welcome to the rainbow forum.
I replied to your post on the main boa forum earlier, was in a hurry and had not even looked into the rainbow forum and wanted to reply with something since I saw a couple of problem areas.
Again from my other reply:
The red bulb is not needed unless you have the tank in a cold room. Rainbows do very with little to no direct light. Only reason to use a bulb is if you need the additional heat load to keep the tank to the correct temps.
IMO, all heat sources need to be under some kind of control. VERY much so with the UTH type. They can and will get too hot for a baby snake and ther is the definate possibility it could get under your carpet and come into direct contact with the glass directly above the heat element. Temps need to be measured where the snake is.....ground floor. You may very well find those temps are higher than you think.
For heat control, you have three basic options:
Dimmer/rheostat - you could either wire up your own from standard components including a wall light switch dimmer or there are extension cords with built in slide dimmers
On/Off thermostat - like Ranco, they simply turn the heat on and off to keep the probe at the right temp
Proportional Thermostat - Like Helix, will apply partial power and raise/lower slightly to maintian temps. IMO the best option
I don't measure my humidity, I also don't mist the cages. I just set them up to be humid all the time. Has worked well for me.
Oh yeah, get an infrared temp gun, GREAT for checking temps since you can point anywhere and get instant readings. I even measure the temps of my snakes that way.
>>Hey all, finally I was lucky enough to have my girlfriend allow me to own a snake! Luckily the pet store down the road just recently got a hold of some baby Brazilian Rainbow Boa's. This is my setup,
>>
>>20 long tank
>>Screen top 3/4 covered with plastic, (metal clips to keep tight)
>>Im running a 60watt red bulb 24/7
>>I have a large soaking pool under the light along with an enclosure. Under the enclosure I have an adhesive under tank heat pad.
>>For a substrate I have the green reptile mat/rug. I also purchased moss which I keep damp to help with humidity.
>>For fun I threw in a sand blasted grape vine which he actually enjoys curing up on once in a while.
>>
>>Heres my questions.
>>
>>I have the temperature/ humidity gauge located in the exact middle of the tank. The highest Ive been able to get the humidity is 60%. Mind you its located about 3/4 the way up the tank. So Im hoping that at lower levels of the tank its higher. As far as temperature, Im holding 77*F in the middle. Obviously its warmer under the heat lamp.
>>
>>My final concern is the adhesive under tank heat pad. It gets pretty warm. The green mat does alot to absorb it. But should I be concerned with the snake getting too hot? Is it smart enough to know. Hey my enclosure is to hot. Im not going to hang out in there and either soak or go to the cool side of the tank? I just dont want to see him getting injured by it.
>>
>>Ive had him now for about 3 days. He ate a pinky last night with no problem. So Im thinking hes comfortable or he would not of ate. ( BTW I did put in him another container to feed him, hes also very tame and loves to curl up around my arm )
>>
>>Hes about 25" inches or so. So hes still young.
>>
>>Looking for advice, I appreciate it alot being new to this community. Thank You!
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Thanks,
Dave Colling

www.rainbows-r-us-reptiles.com
0.1 Wife (WC)
0.2 kids (CBB, selectively bred from good stock)
LOL, to many snakes to list, last count:
12.25 BRB
12.14 BCI
And those are only the breeders 
lots.lots.lots feeder mice and rats 