Just built my mouse breeding setup.

[PurplePython]

14 gallons is not enough for 13 adult mice. I would also only use one male. Try 2 breeding groups of 1.5 at most. It may be different for you but I found that 1.2-1.3's work best. Hope this helps.

so in 2 of my tubs, put 1 male with 3 females

then in my other two tubs, i can just use those to seperate sexes?