Originally posted by tikeyas_mom
only hurt or nursing rats should be in a tank.
If the tank had a topper on it, it would be ok. BUT- if I remember correctly, you can only get toppers for 10 gallon tanks.

I think that since one rat will be housed in a very large tank it would be ok, especially if you spot cleaned the cage every day and cleaned it thoroughly every week. If there were two or more rats I wouldn't advise it because the urine will build up faster.

$0.02