it's a 250 gallon tank, we purchased it from our local propane company. we leave it in the same place on the farm for them to fill. we were able to cover 4-6 acres each time we fill it. the original unit was 1,000,000+ BTU unit. we have divided the unit into three. not sure if that means each unit would be around 350,000 BTU. whatever it is, it does the job.
the tank is designed to be Mounted on the front. we like that, keeping it away from the flame. really we could customize the front attach, we have it set up for pallet forks. you could weld a bobtach on or global universal or three or Hitch or just leave it set up for pallet forks.
we purchased a 3 bed wide flame weeder 3 years ago. it proved to be too wide for us. we have converted it to three individual 72" units. the tank is not included. we have them set up to hold a 500 gallon LP tank on the front end loader and the flamer to be held on the back 3 of Hitch. it has worked well for us.
one is just about ready. the other would take about a month to complete.
$10000 each (does not include tank)