Somewhat newbie question =]

Heya guys! I'm kind of but not really new here hehe =] I've been reading around the site for a while and figured I might as well register so I can participate!

So, I've got a quick question. I've recently acquired two baby Ball Pythons, and an adolescent Red-Tailed Boa. Nefer (my boa) came with a 36x12x18 tank, and I know I'm going to have to upgrade her soon enough. My question is, would this tank be fine for an adult Ball? I'd like to save it for when either Khai or Isis (my baby pythons) need an upgrade as well. I've had my adult python Pharoah in a 48x24x24 tank the entire time I've had him, so wasn't sure if it'd be fine keeping an adult ball in a tank that's a foot shorter. I've currently got Isis in a 16q tub, and Khai is in a 24x12x12 tank. :rolleye2: these measurements make me crazy! Anywho, thanks ahead of time for your replies =]

-Sigh

Oh also, Nefer came with a bark half-log type of hide, ya know where it's open on both front and back, and it's riddled with places for bacteria to grow because of the bark. I tossed it out because I had a real hard time cleaning it >.< Are boa's just like ball's where they like to be really snug in their hides? Because I put a hide in there that's the perfect size for her if she wants to roll up and be good and snuggled on all sides, but I feel like it's too small for her..But I did notice she didn't use the half-log yesterday and most of today, she preferred to lay at the end of the tank wrapped around some fake plants.

-Sigh