Forum Discussion
ktmrfs
Nov 01, 2021Explorer II
we carry the 7 gallon fresh cans when we are going to campgrounds w/o water hookups. With a 35 gallon black tank, no need for a "blue boy" for the black tank. 35 gallons will last us at least two weeks. And 70 gallons of grey also will last several weeks. It's the 40 gallon fresh that needs an occasion refill
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