unexpected arrivals

[julielugton5]

we bought two supposodly female gerbils, december last year only to find out last wednesday that they were actually m/f. we now have 6 babies. if anyone has any advice i would be extremely grateful.  we do have a large tank for them already and another on the way, but i would be grateful for anyone with info regarding housing colonies of m/f gerbils. We are hoping to keep some of  the offspring and are aware that we will probably end up with another lot of pups.