All the "equipment kits" I have seen show two big orange coolers, but all the instructions I have read (so far just a couple pictorials) only seem to use a mash tun and a brew kettle. I have a 40qt brew kettle, so what do I need to acquire to move to all-grain brewing? One cooler or two?
I am thinking just one 40qt cooler, a false bottom, ball valve, and some tubing. Is that correct? It seems like the other equipment (sparge arms, hot liquor tanks, etc.) are extra equipment that I don't need yet. If I am wrong, can somebody link me to an instruction that shows why?