doughere wrote:
My unit originally had 40 gal grey and 40 gal black. 40 gallons of grey is good for 4 days, 40 gallons of black for 10 days. Not very sensible.
Of course it's sensible. With just my wife & I using our camper and just the toilet feeding the 30 gal black water tank we could camp for at least two weeks straight without having to give any thought to off loading the contents of the black water tank. The 30 gal grey water tank I typically off load every day or two and because it's MUCH easier to deal with grey than black no way would I want a combined black & grey tank.