If you can refrigerate then that will extend the freshness of crushed grain. I looked into this as well and the gist was that it was ok for several months in a fridge. But I can't speak from actual experience, maybe someone else here can.
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I don't doubt that they make quality equipment. I'm just wondering if there's someone here who has owned both a Blichmann and say, an SP-10 like I have, and can tell us what the additional $125 premium buys you.
That stated flow rate is at the output with no resistance and 25 feet of 3/8 tubing provides a lot of resistance. Look at the head pressure of pumps as this this equates to power. Higher head pressure will help push water through the chiller.
The Blichmann floor burner.
Specifically designed for the homebrewer.
Here's my system.
Actually, now that I look at it, I'd probably just brew with your existing profile.