Aquariums are a bit of a hobby of mine, and have been since I was a kid. I’m thinking about buying a 29-gallon tank, and I have to ask–why 29 gallons and not 30? I’ve always assumed it had to do with shape and design of the tank, but then again, one more gallon isn’t much. Anyone have any other ideas? (Or better…anyone know the answer?)
Typical tank sizes are 5, 10, 20, 29, 40, 55, 60, 75, 100, and 220 (largest non-custom available). I’ve also wondered–why have a 55 and and 60 gallon tank? When you’re dealing with two 4ft tanks, what marketable difference does an extra 5 gallons make?
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