I'm thinking around $600.00 for all the materials if you have to buy the stock tank which I did not. I would suggest an HDPE stock tank vs. the galvanized tank, as when you consider the not having to purchase the epoxy paint it's cheaper. Also you're not worried about the epoxy not lasting.
Rural King has a 6 foot tank for a little over $200.00, I think. It has to be special ordered and prepaid, and no deliveries during the winter, but there is no shipping charge.
If you build a fluidized bed sand filter or a bioreactor filter you're not only looking at less for the biofilter materials, but you won't have to buy a tank for an RBC and there will be less floor space needed. Then you're talking $450.00 or less.
Not proprietary at all. The wife is good with it as long as I make money, although she is a big believer in hobbies too. The original set up before I made some modifications was from the excellent book Small Scale Aquaculture by Steve VanGorder.
I found the book (brand new) on Amazon for $2400.00!
