Originally Posted by Yooper
I go back and forth between batch sparging and continuous sparging, depending on if I'm in a hurry and what's going on that day.
I have a HERMS so I ramp up to mash out temps and then just switch the hoses to sparge and drain the MLT. I have two pumps, so it's a single tier. I keep the same level of liquid above the grainbed that I did during the mash and just continue until I reach my boil volume. It takes me about an hour for a 10 gallon batch, more or less.
Thank you, Yooper, for saying continuous sparging! I loathe the term "fly sparge"! LOL
OP; I do a variation on a continuous sparge. Instead of taking the entire hour to slowly run sparge water in, after mashing I begin runoff then get all my sparge water in in about 5-10 minutes. The trick is a) having a MLT large enough to hold it all and b) to do it without disturbing the top of the grain bed significantly. Basically, it isn't necessary to match in and out flow as long as your run off time is the same (about an hour) and the water isn't actually mixing in with the mash, but staying above it until gravity drains it through. Now, this does assume you have an insulated MLT so you don't lose heat.