i wouldnt use a galvanized steel one myself poly ones are just to good at the farm supply store where i got mine they have a 1800 gallon circular poly tub but i couldnt fit that down my stairs and my woman would kill me if i took up the garage
stores like Lowes and Menards may also carry them. the Menards here in Columbus had a 150 in stock when I was looking and could have ordered me the 300 gallon for $180ish.
i was gonna get the 300 but i wasnt sure i could get it down the stairs but i know that i can now so i was thinking of getting one for a huge water aging system for the new pond
I have a 300g rubbermaid in my basement, turned on its side it should fit thru a regular opening. It fit into my door easily (I have a daylight basement).