Hi! There is a great tank-sizes pages at: http://www.maisel.de/~eva/cagesizes.html It has it with inches, cm, liters,gallons, UK en USA... It's really good! Hope I could help! Sarah "Sorry to be a pain, I just wondered what are the dimensions for a 10 gallon tank and a 20 gallon tank? Most of my tanks measure 36² x 18² x 12² I don¹t know what that is in gallons. I keep 4 6 gerbs in each of these 3 foot tanks. Regards, Josie xx"
