I decided to step it up to AG, and am in the midst of setting up my system. However, I am running into a question that I can't seem to figure out the answer to. My mash tun is a converted Sanke keg with the weldless Mash conversion kit from More Beer!, meaning I have a 90 degree pickup tube from the false bottom to the ball valve.
During testing whenever I fill the keggle up and drain out through the pickup, the water only drains down to the level of the spigot (simple physics right?). The problem is about 2 gallons of water is remaining in the keggle. I guess I assumed a suction would have formed to drain much more water out.
So is this a problem?
Did I drill the drain hole too high? I guess I could buy a pump to drain more of the liquid out if need be. Or compensate by loss of wort by adding extra grain or extract to reach OG.
Any help/suggestions is appreciated!