if the FG is actually 1.006 and my reading wasn't diluted with starsan, then I guess I'd have to go with Richard's explanation of the 2.5 hour sparge.
I didn't take a temp reading in the kettle, I just turned the burner on and off over and over to try and keep the wort temp up...I could very well have not hit 180F...
So if this is the case, and if I decided to batch sparge like this again, should I just ensure I maintain a kettle temp of at least 180F throughout the sparge?
And how do I reduce the length of time it takes to batch sparge? maybe it's typically only done twice, where I did it 3?
I usually just keep an inch of water above the grain bed while sparging...