Post Number: 802
|Posted on Monday, July 04, 2005 - 05:38 pm: ||
I just did a batch of Skots Genesee My Butt and did a hands off fly sparge with a peristaltic pump. It worked great, but I was sparging at about 1/2 qt/min and I think that was too slow. It took forever to gather 13 gal for an 11 gal batch. Also, the final runnings were about 1.008, probably too low. My efficiency was a whopping 90% in the fermenter!
What is the best rate for fly sparging?? Hold back those comments about how I should be batch sparging. I recirculated throughout the mash and my runnings were crystal clear (like a pilsner). I could never get a clear wort batch sparging.
Oh, another 5.2 data point. Didn't work for me. I added 2 tbs in the mash and it had no effect on the mash pH. I did have to add 9ml of lactic acid to lower the pH from 5.5 to 5.2. I think that was a big contributor to the 90% efficiency.
Post Number: 189
|Posted on Monday, July 04, 2005 - 07:18 pm: ||
I fly sparge and it usually takes anywhere from 45 min. to 60 min. to collect about 8 gal. in the kettle. I've read (Noonan) and heard that a slow sparge will yield a better efficiency.
Belly Buster Bob
Post Number: 2385
|Posted on Monday, July 04, 2005 - 08:23 pm: ||
I used to always fly sparge and wish I still could...new system design prohibits.....I sped mine up quite a bit over a few batches and near doubled the speed without any ill effects. Keep lowering the time over several batches until you have a drop in eficiency then you're dialed in