Originally Posted by Top
I added a 25 gal black tank and two 25 gal gray tanks. Most people will tell you 25 gallon black tank is enough. I thought that 50 gallons of gray was good for a long weekend without full hookups.
With two of us, black lasts nearly a week and gray lasts 4-5 days. Both tanks are 40 gallons. We run out of fresh in about 3 days.
If I were designing the ideal trailer it would have 40 gallons black, 50 gallons gray and 60 gallons fresh.