i am not sure how old the tank is i bought it on craigslist. it is on a home made stand made of 4x4's and 2x4's. the tank was not completly level it was off by about 1/8th of an inch which i did not notice until last night so i think that might have had something to do with it. if i had to guess i would say the tank is atleast 15 years old but i cant find any name on it.