Black/Grey tanks
Just an idle question ? Why do RV's have separate black and grey tanks. I have a septic system at home; black and grey wastes flow through the same pipes into the same tank; eventually to the field....
Forum Discussion
You have to go back PRIOR to 1978 to see any RV that had 1 Waste tank(There were some, very few, that had single tanks after 1978) . So, Is your question relevant after almost 40 years? Probably not. Weight distribution is not a factor. The plain fact is, most people want 2 tanks. You will put more waste in the Gray tank than the black tank. So dumping the Gray just makes more sense and you can go longer if you do not fill a single tank faster due to all gray and black going to a single tank. AND it gives the Black tank chemicals time to completely dissolve the Black waste. Doug
