Here's why:
* Space Needs: Gerbils are active and social creatures. They need plenty of room to run, play, and interact. A ten-gallon tank is simply not big enough for their needs.
* Minimum Size: The absolute minimum recommended space for two gerbils is a 20-gallon long tank. Ideally, you'd want a tank even larger, like a 40-gallon breeder tank.
* Health and Happiness: Crowding can lead to stress, aggression, and health issues in gerbils.
Always prioritize the well-being of your gerbils by providing them with enough space to thrive!