Did my first brew on the system yesterday. I did a crush size of 0.035" on Mighty Mill 3, well that's what the label indicates so it's probably slightly larger. With that, I got a 72% mash and a 73% brewhouse efficiency. Water drained out really quick with that, my previous system, I'd have to "squeeze" the basket to get most of the wort out.
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A few things I had to figure out mid-brew. The rubber piece on the malt pipe shouldn't be pushed down all the way. If you do, the top plate blocks the recirculation since it's coming through the middle hole. The pump is pretty strong because when I removed the top plate, a nice stream shot up about 8 inches. Lol. I did not use the whirlpool side of the pump during the mash, which I may try next time to see if I can bump that mash efficiency up.
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Boil at 75% had a good boil going. I think I'll be modifying the lid to add on a steam slayer setup for my basement. Did almost have a boil over as I set it to 100% and turned away to weigh out hops, I'm use to 120V system taking a while to get to the boil.
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Overall, very happy with the system. I know some complaints of in a few of the review videos was lack of online access, which for me is not a big deal and really I don't need another thing connected to our home network. I know some of the other issues people had trub filter and hops, since I was using the hop basket, didn't notice any major issues. I may try it without next time since it was a tight fit with the chiller, which I also bought.