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Old 06-18-2012, 03:22 PM   #1
Join Date: Nov 2011
Location: SE MI
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black tank and full hook up sites

What is the best practice when on a full hook up site?

Keep valve closed until 3/4 full or so and then dump or leave the valve open all the time?

Is it better to keep a decent amount of "fluid" in there to aid in a better flush?

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Old 06-18-2012, 03:30 PM   #2
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Keep valve closed until 3/4 full or so and then dump.

Leaving the valve open will lead to problems. You want lots of water in your black tank before opening the valve.

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Old 06-18-2012, 03:45 PM   #3
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Keep it wet till you dump. Think "Crap Mountain"
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Old 06-18-2012, 04:32 PM   #4
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Keep both tanks closed until you need to dump. Just remember that having plenty of water in the tanks is a good thing. When I dump the black tank I usually fill the toilet at least three times to the top with water.
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Old 06-18-2012, 09:01 PM   #5
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Never leave the black tank dump valve open unles you are dumping a full/near full black tank.
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Old 06-19-2012, 07:45 AM   #6
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I leave the black closed until full. I leave the grey open until the back gets about 3/4 full then I close the grey to build up soapy water to "clean out" the hose after dumping the blacl tank.

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