Take a look guys:
"RON:
it all started when a friend gave me a 100 liter aluminium pot. i wired in two 2000W elements, with a digital PID controller.
I added a magnetic washing machine pump (new), that takes the liquid from the bottom of the put and returns it from a side port located above the grain level. also added is a tap and a sight glass.
The pump has three purposes: to circulate the mash liquor during the mash, to circulate the wort during chilling and to whirlpool the wort after the boil.
and this is what it looks like with the sack inside:
"
well kudos to Ron. I am happy to say i gave Ron a good bit of info on BIAB and much of it thanks to all of you guys on BIABEWER.