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I don't see that in the posted pics...what was the plan? Also what is the meaning of 70% efficiency in an extract beer? That can't be right...

Wow thanks for sharing. Amazing story.

looks good, love to try them out

Hmm I thought I knew where this was posted. Perhaps it is behind the paywall. Anyway when I go to where I thought it was it is same graphs and maths posted here by @doug293cz (and nicely attributed to him over there). I'm with @madscientist451 would be interested to see the report of the...

Your options kind of depend on your fermentor. I'd say it is not best practice to open the fermentor to either add or remove dry hops. You want to keep the beer away from oxygen as much as possible post fermentation. I'm using a conical with a hop doser for adding and a bottom dump for...

You need that PRV valve to protect you and the fermentor. Get a duotight spunding valve and mount it on the gas post.

I think that one is designed for use inside kettles. @Bobby_M doesn't mention using it in tanks in the description. I like the design of the TC dip tube but looks like it might have a small but cleanable groove where the tube meets the ferrule. At least it is described as being for use in tanks.

I'd consider all the water used in your step additions to be part of the mash water. Sparge water would only be counted once you start lautering.

I've read astringency is harder to detect that a lot of the literature suggests. You mentioned early on the flavor was like a punch in the mouth, I've heard it described as something presenting a lot more subtly. Maybe your issue wasn't actually astringency but your mind went there naturally...

Thanks for posting. Looks like it will work just fine. However that picture has me hesitating. It appears there is a gap between the tube and the piston that would be impossible to clean. Is that the case? For a little more $ I'm thinking this might be better way to go...

Thanks - yes good to know that's a way to get useful results (once you have access to a good enough meter).

OK I get it. For these DO pickup measurements to be meaningful they need to occur shortly after the event else the oxygen reacts with the beer, does it's damage, and then isn't around anymore to detect. So breweries look at oxygen pickup from step to step instead of focusing entirely on TPO at...

I'd also be skeptical of testing in glass. Any way to get that probe into some sort of a tee fitting that could be connected to the beer line?

Thanks for trying OP I was hopeful but am sad to be reminded of this limitation. I'd love to get my hands on one of those high end units. Still I have to ask, shouldn't the 1.2 ppm result for the closed transfer be cause for concern even with the limitations of this instrument? I could see...

Is your concern regarding dry fire that you might get a stuck mash and pull the space under the false bottom dry? I've struggled with recirculation in past and had a period of time where I was frequently getting stuck mash. I was using a Wilser bag at the time on top of a Norcal false bottom...

I'll just mention again there is no rule that you have to use all your recipe water for either mash or sparge. There is nothing wrong with adding some of the total water directly to the boil kettle if that is what it takes to avoid over sparging. This is probably not an issue for a 4-5% ABV...

Agreed temperature is reported to be another factor on tannin extraction. I also tend to mash with about 11 gallons of water and sparge with 15 but that is due to mash tun limitation. I mash at just about 1 quart per pound.

for a low gravity beer it is not unusual to have more sparge water than mash water if your system is set to a specific water to grain ratio. With these beers you do risk getting into a range of pH and gravity where you could at least in theory start having to worry about astringency. That...

Try a floating dip tube in the serving keg.

Haha been there done that. I really hate the sample valve. Every few months I think about swapping it out for one of these. https://www.brewhardware.com/product_p/tc15_samplevalve.htm