08-01-2013, 07:15 AM
I have just stayed in a park with 50 amp and water but no sewer. I have one tank and left the gray open and stayed a month. We used the washing machine and dishwasher and had no problem with holding 160 gals black in the tank. The one tank worked great for me.
1996 #422 and 2004 #689 with YELLOW Goldwing, BMW K1200S, RZR, Dodge Truck