01-30-2014, 01:30 PM
I recently completed a 10' dia x 4' high 2,000 gallon tank made out of two galvanized steel cattle panels overlapped on the ends and fashioned into a ring. I set it on a gravel and sand foundation that sloped to a low spot in the center and lined it first with roofing paper to protect the liner from the metal and gravel. The liner is a 20' x 20' piece of black 6 mil contractor's plastic. I covered it with a $25 10' x 10' piece of shade cloth from Ace that is bungied to the sides and supported in the middle with a $10 30" Gold's Gym exercise ball from WalMart. It looks really nice and cost only about $300 for everything. I had to get more storage and it had to be cheap. I accomplished that. I don't know how long it will last. If I had a decent budget I would opt for a very large ferrocement tank and go in style. That would look out of place beside a rusty container though.