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I have seen it once with bud/miller/coors vs Guinness. As you would expect the big three are pale yellow and Guinness is this beautiful pale-ish red color (all at 430). I have no idea how the would compare to l.a.b. I honestly have never used it (I think that's obvious now). I need to read...

I agree 100% I guess the point I was trying to make was that to the human eye there really isn't an effect. As far as my comment about measure or opacity, it was a gross generalization which I should have been more clear about. I was more alluding to the fact that you can have 3 beers all...

Chill haze is produced by phenol dimer/protein H-bonding, which increases with the lowering of temperature (hence 'chill haze'). If your experiencing chill haze without freezing your beer it means the pH in the mash is too high or the protein content is too low. Next question is if you are...

The IBU's may not change but the perceived sweetness does. Depending on the time frame you may want to over hop the beer. This all trial and error though, like revvy said there's no good calculation for it. It might not matter to you or you might not even taste it. As far as aroma hoping, I...

Hops will add zero perceivable color to beer, the green pigment is not that water soluble in the first place plus the amount of sugar you have in wort makes it next to impossible to extract it. As of the yellow/brown of the oils, before you get any noticeable color change the beer will become...

It looks good, only 2 pts off isn't a huge deal in terms of how the finished beer will turn out. The large flocks may be because of the hop leafs, which tend to have a higher phenol count then pellets. Poly phenols, if memory serves me right, bind with proteins to precipitate out. Looks...

The SMM to DMS conversion does take place under 185* its just slow. The time it takes SMM to convert to DMS at 212 (boiling at sea level) is about 38 minutes, at 185 it would take over 5 hours for that to occur. My bet is that there is there was a nice amount of DMSO in the grain which...

I'll take a shot at trying to analyze the brew. (if anyone does not agree with my thoughts feel free to say so. I don't pretend to know everything) The B.S. First off the idea of a "protein" rest is loosing momentum. The biggest enzymatic factors at this temp is that which work on...

So according to the electric heat spread sheet I have it takes 5 minutes for 1700 watts to heat 5 gallons of water 10*F and 4 minutes for 2000 watts. Also it looks like the 1700 watt is 13 1/2 inchs long where as the 2000 watt is 9 1/2 so the 1700 watt is a much lower density element. I...

If your looking for pure tasteless ethanol contact a local university, they usually have it by the tank load and sell it in gallon increments. You can get near pure (190 proof) or pure (200 proof) Etoh, dilute it with water to the strength you want. Its usually cheap too, well compared to...

I completely agree. That window is around (actually a little bit higher then) room temp. The point I was trying to make is that optimized for brewing, the 154-156 range, is that way because of lack of other enzyme activity not the speed of which alpha amylase works. Correct, but it...

I believe your issue comes in the misconception of what optimized for brewing and biologically optimized. Biologically Alpha Amylase has a HUGE range of stable temperature operation. It is active from basically 0C up to 90C, which makes it ideal in starch conversion in a wide range of...

Since no one seams to be replying I'll throw my 2 cents in. If you'd like to buy, here are some ball valves for about 50 bucks a pop (probably most cost and time effective) If your interested in making one I'd suggest first figuring out the torque needed to turning the handle, which you...

Those things are awesome but have a little too much power for regular fermentation buckets. The buckets tend to implode when its at full suction, making the top no longer round and difficult to get any lid (including itself) on. I'd suggest spending the 10 bucks and getting the thicker...

I am currently using that same model, and all I can say is I love it. A couple drops from a pipette and 2 seconds later you have a reading that's accurate. Its also great if you fly sparge, taking readings during it can help you hit your initial gravity every time even if your still figuring...

I have never built one myself but if your looking for a good looking wood finish you might want to look at getting some MDF board, really cheap stuff, seal it up then use a wood veneer like This to make it look nice. probably wouldn't cost more then 30 or 40, but then again I have had a few home...