Is 29 gallons too small for 3 gerbils?

[sparkbubble]

My gerbil had 2 pups (the others didn't make it), and I am 70% sure they are both female. I'd like to keep both from the first litter, but I don't know if my tank is too small for three gerbs. If that is the case, I will need to keep those two sisters together and I suppose I will just hope for a female in the next litter. 

[Markpd]

Well, going by our recommended standards, it is a little on the small side.

Can't upgrade?

[sparkbubble]

Actually, I don't need to worry about that issue anymore, as I have one baby gerbil (fortunately female) left. Thankfully, she is happy and healthy. I didn't prefer to buy a bigger tank because I'm a bit space crunched at the moment and I didn't want to take more space if I did not need to.