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Old 05-14-2002, 09:20 PM   #1
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Flushing Black Water Tank

We discovered through normal operations that our septic system smelled AFTER we dumped our tanks. Normally you would think a full tank would smell but I guess the water and chemicals hold the odor down. We ended up dumping the black water and then filling and dumping the black water tank three times with a hose. That seemed to help.

What is the best way to clean the black water tank?

Here is something I saw in the Camping World catalog.
http://www.campingworld.com/browse/s...=7332&src=UPSE
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Old 05-14-2002, 10:58 PM   #2
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Hi Fred,

It is better to let the tank become full or nearly so before dumping. This provides a good flow to flush the tank contents. If possible (i.e. when dumping with a full hookup) I hold the valve open on the toilet for a couple of minutes to flush clean water through the tank before closing the dump valve. I make it a point to do a fresh water flush through the tank at the end of every trip. Regardless, "matter" does accumulate over time and will become odoriferous. Use of tank cleaning products periodically is a good idea. Usually they recommend you fill the tank, add the solution and drive to slosh the contents, then dump.

Jim
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Old 05-15-2002, 09:05 AM   #3
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we were told to let it get at leat 3/4 full before dumping, and then we use a jet spray wand to clean it out when totally empty.
I run clear water back in with some Odorloss, and leave a few gallons in there then. Same for the grey tank, I leave a few gallons in there except when winterized, which i don't guess you have to worry about too much.
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Old 05-16-2002, 03:59 PM   #4
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I do let it fill up to get the 'power flush'. What I was missing was the rinsing part. I will make arrangements to do that on a regular basis.
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