Originally Posted by shlap
Thanks Schnitzengiggle! That puts my fears to rest that the pump doesn't just aerate the crap out of the wort as it's going through or something to that effect. It sounds like we did the exact same thing. I had the ballvalve on the OUT of my pump closed about 3/4 of the way too. Also had foil on top of the grains so I wouldn't disturb them.
I also added 5.2 stabilizer to my strike water right before mashing which might be a no-no. Could that be it? Any guesses as to how super cloudy, particle-free wort will turn out tasting? :-)
Super cloudy but particulate free...hmmm, my first thought would be just a bunch of protein in your wort. But it does sound strange to say the least.
Just make sure next time that your flow back into the MLT is not running across the grains. I always get crystal clear wort when I vorlauf with the pump so something does seem amiss.
FWIW, I use the bottom of my pitcher and form a foil bowl around it which I lay my return/vorlauf hose into as not to disturb the grain. I don't lay a sheet of foil across the top of the grainbed or anything like that.