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Old 11-30-2015, 04:30 PM   #29
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The RV Geeks have a video on this topic they leave the gray open but leave a kink in the slinky to stop the sewer odors!


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Old 11-30-2015, 07:36 PM   #30
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Originally Posted by stan5711 View Post
If either one of them is open aren't you going to have sewer gas come in.
ref post #6; always leave a dip in the hose to create a "water trap" similar to standard P-traps in household sink drains.

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Old 12-01-2015, 06:25 AM   #31
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Originally Posted by Dennis Dean View Post
What a CRAPPY thread!!
Both closed until I need to dump the black. Check the grey before and after laundry and showers and dump as needed but make sure I have at least half grey before dumping black.

Funny thing first time I RV'd was with a rental class "C" and I thought once hooked up you left both open all the time, wasn't until this forum and purchased my RV I read how wrong that was
Also learned on that trip why gloves are a must and an extra hose for rinsing area if accident happens. hose wasn't quite locked and when I open the black the forced popped it off

Was so embarrassed and the park manager was chuckling at me and told me it happens, sent a guy over with a power washer to go over the area I hosed down.
Yep..... One of those "oh s---" newbie learnings. Good for a chuckle now, but wasn't funny when the connection between the hoses came apart.......

Of all the helpful hints I have learned over the last year from iRV2, the one I never saw (but have since seen from either Escapees or FMCA) is to do a quick short dump on the gray tank to ensure all connections are good before dumping the black, then of course dump the rest of the gray.......
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Old 12-01-2015, 10:00 AM   #32
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We typically stay at least 2 weeks at a time. Where we have no services, obviously both stay closed the whole time, no problem with black capacity, but we are forced to eat out a lot and use campground showers as the grey fills too fast.

In FL we have full services and stay 30-60 days. Here we dump black about every two weeks and leave the grey open until a day before we disconnect. Sewer gas? Not a problem, it just vents out the stack. Flies? Never noticed a problem. We do have a flush connection on the black tank that really helps when we dump.

I have a clear section in the bay and am surprised how clear the grey water is when I dump it. Still stinky though.
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Old 12-01-2015, 10:10 AM   #33
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Originally Posted by MSHappyCampers View Post
We keep the black tank closed until at least 3/4 full. We leave the gray tank open until the black tank hits 3/4, then close the gray tank for a couple of showers. We then empty the black tank, flushing it out with the built-in flusher until the water is clear, then open the gray tank to flush out the sewer hose.
Ditto. And we have a SaniCon.
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Old 12-01-2015, 04:45 PM   #34
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Closed, unless dumping, And thanks for the reminder. I need to dump tomorrow.

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