which water dish

im getting 2 male bps that are about 31 inches around 450 grams and in 32 qt sterilite containers, also a female baby. which size dishes out of these for them?
http://www.chewy.com/dog/ethical-pet...FQYTHwodURgAVg
thanks

I have the ~5 inch ones in my 32 qt tubs. I also have the same size in my adult tubs, so no there's need to upgrade down the road. In my hatchling tubs, I have the ~3 inch size.

thanks

I'd get the 4.75 in....

OOPS edited because I didn't read like I was supposed to.

If the usual humidity for your region is dry, then use the biggest dish you can.