I exclusively boondock and have to carry the extra weight over some Colorado passes. H2O @ 8.3 lb/gal, when computed, not only increases weight quickly, but puts it all on the left side of my 3124KS. If I don't care what I'm taking, I still only top off my 20 gal fresh tank and then use that to charge my hot water tank (6 gal) and then only put a MAXIMUM of 2 gal in the Thetford. If you really want to extend the Thetford, you can put just enough water to dissolve the 'blue stuff' and then pee in it for a couple of days to get it to the charge point. Putting up to 3 gal into a 6 gal reservoir never made any sense to me. Once I get to the campground, I use the hand pump to fill a 6 gal portable 'jerry can' with spout to recharge the fresh H2O as necessary. If you are going somewhere with full hook ups, I would put in just enough H2O to pump into the hot water heater. If you use shore power, you can use the electric function of the hot water heater to preheat your water before leaving the house. That way it's hot (or at least warm) when you get there. This procedure affords much more in the way of 'consumables' when I get where I'm going.
Greg
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Rotor_Wash
HEMS (Helicopter Emergency Medical Service) Pilot (ret)
Northern VA
2002 3124KS
2007 Tahoe
Solar
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