Large steel H20 storage tank overhaul?
I have a large (20,000 gal) steel tank I want to use for irrigation and possibly potable water storage. Though the tank is very heavy duty (3/8 steel) it is rusted on the inside. This tank may have at one time had diesle in it so it needs an interior coating to make it potable. I was considering sandblasting the inside and then applying a spray or brush-on coating. Any suggestions for this coating material? Again, it must be safe for drinking. Or any other suggestions to make this work?