Check out www.aquariumplants.com if you are looking for a aluminum tank or if you want a steel tank check out http://www.bvrgelements.com/category/Tanks/ If you want to go local pacific welding supply in Bremerton has the best deals but I too have been on the search for anything used local for a few months now even in the greater Seattle area and have had no luck. If you find anything please let me know too as I still need a 5-10lb tank to finish my setup.