Thanks for the nice complements. Sorry it's taken so long to reply. The couple of things I have changed is the float switch in the mash tun, because the cheep plastic ones where not reliable and stuck under mash temps, and made a nicer switch with alarm for the solenoid water filler.
The pump has been great. I've done over 20 batches with it and love it. I really like the fact it's DC because I have wires running up my mash tun going to a relay to control the recirc.
In my opinion I like the two tier rather than two pumps. One pump is enough for something to go wrong.
I do have to put hops in a bag now otherwise it plugs up the pump.
One more thing to anyone starting a build in there house. Don't skimp on the ventilation. I tried bath fans, range hoods, and the only thing that ended up working was a Hydrofarm 400cfm in-line duct fan. 80$ on amazon. Do this first you won't regret it.
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