Min. black tank for 7 day Boondock?
We have a short list of sub 28' "couples" trailers that we are considering. Some have black tanks as small as 25 gal. What is a min. tank size, for a couple, that would allow us to boondock at least...
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the black tank is not your issue - grey tank and fresh water - if you want to shower or wash dishes. There are ways around both, but I fill my grey or run out of fresh before I fill the black.
