Adding a “supplemental” gray tank?
We love the floorplan of our new 5er, but I’m not happy with the holding tank capacity...primarily gray. I’ve thought about replacing the tank with a larger tank, but I’m wondering if it’s possible to...
Forum Discussion
I added a second gray tank to my motorhome. It's 35gal. It is situated between the stock gray tank and valve so I can use gravity to fill it and empty. I doubled my capacity. I only use it when primary tank is full. Pull the valve, it all fills up secondary tank, close valve, primary tank ready to use again. Vent on secondary tank is a 1/2" 90deg fitting which the tank came with.
