What dimensions are you thinking about? (length & width)
I'm a tank fan myself, & when I was in California, aquarium stores carried very well-made wood stands (some of which I still have) but I also
think in terms of furniture. Maybe in thrift stores too. Another idea: 2 of my tanks are each on a pair of basic oak end tables, which when
put together are the right size for the wider tanks. See? Sometimes you have to be a little creative.And sometimes you can also use a
tank stand, but just put (fasten) a wider "table top" onto it...just make sure it's stable. (And by "table top" I mean you can have some ply-
wood cut to size for you at most any hardware/lumber place.) And of course, you can always consult a "handyman" too.