Rich:
You use a tub that's 36” x 24” x 8” for mice? IMHO, that's big rat size and overkill for mice or ASF's.
I am using a rat rack for ASF's (jumbo pan 22.25" L X 16.75" W X 6.75" H) and have to use a glass bowl for them to reach the water. The weanlings cannot get that high up. I guess they could jump up to the screen and drink upside down but I think that would just be mean on my part. I keep the little ones in a separate tank with water bottles. The ASF's would have been better off with the large pan - 18.5" L X 15.25" W X 5.25" H. I'll use those for my next rack.
I use the small Petco pans for the mice (14.14" L X 10.37" W X 3.53" H) and they seem very happy. Takes up a lot less room too.
YMMV