Just finished up this easy to build and use electric mash in a bag system. Just doing a boiloff test now and will be getting its first run tomorrow. I'm old enough that lifting those 5 gallon jugs of water hurts the next day, so designed this to take that into consideration. See below for full description and use: Dumping the water into the 10 gallon MLT at this level and pumping it up to the boiler is much easier on the old back. Heat it to strike temperature in the Digiboil and gravity feed to underlet back into the MLT with the brewing bag of grist in place . A brief stir and the mash is on. Once the mash is completed, pump back up into the Digiboil. With ball valves both on the MLT and Digiboil I lose about a thimble full of liquid when disconnecting both hoses and lifting the pump to drain into the MLT. When I drain and pull the bag, I just dump the remaining wort into the Boiler, ending up with just the grain absorption as a loss. Once the wort is boiled and chilled I stick a short length of tubing on the boiler spigot and gravity drain into the fermenter. I use a hand truck to wheel the fermenter into the other room and lift it about a foot to into the dedicated fridge. If I use this setup outside, I have a ramp up to the back porch which makes it easy. The great thing about this system is that the pump and plumbing can be easily switched back to my boil kettle if I want to do a batch or 2 with propane.