Biojake made this tank for a tank gotten at tractor supply.The filter is mounted inside to heat up. Ignore the dirty insulation. He was just hauling some old dirty carpet and it. It is really a white poly tank.

The heated tank can be one of the big ticket items. I spend about 200.00 on my tank, heater, hardware, and fuel guage. It starts with a Tempo below deck fuel tank from one of these online stores. They come in various sizes and shapes. They cost from 100.00 to 150.00. They have the fuel sender already bulit in. Here is a link to many at MarinePowerService.com where i got mine . I got the TP12SC. The plastic tanks insulate better, are easier to cut into and work with and are cheaper.