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Old 07-02-2015, 09:25 PM   #15
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32 years and always keep the gray tank open and draining. Most new RV's have a flush system for the black tank now.

Don and Nancy
[2014 40QBH Phaeton, 2015 Buick Enclave, 2yr old sisters Sara n Kaycee, Havanese, Two Segways
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Old 07-02-2015, 09:35 PM   #16
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We keep both tanks closed until necessary to dump. The 5er seems to have two grey to one black. The coach fills the black faster because of the different toilets, so the black and the grey are dumped at the same time.

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Old 07-03-2015, 04:40 AM   #17
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You know, I do the routine that I learned in the beginning: Dump black, flush black, drain grey.

However, it seems the water coming out of black resulting from the flushing is cleaner than the grey water. I've been tempted to dump grey and then flush black. Haven't done it yet, but thinking about it.
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Old 07-03-2015, 05:39 AM   #18
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If you have a tank wash system then dumping the gray water while the black tank fills might make sense. Most of us do not have the option. ;-)

FWIW We leave the tank valves closed and run off tank water. Under normal usage we dump every few days. We also leave the hose packed until we want to dump. IF we are somewhere for a long time then we leave it out but shut all valves.
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Old 07-03-2015, 06:01 AM   #19
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Originally Posted by Hit_the_Rhod View Post
When dumping, just make SURE that he slinky is SECURELY fastened to the fitting at the end of the slinky, the one that you hook up to your tank drain . . . . Don't ask me why I am giving people this advice okay? It hasn't been long enough to be able to laugh about it yet.
And that the connection between 2 sections is secure........ Given my recent newbie shttty experience where 2 sections separated when I released the black tank, I will now not only double check all slinky connections before pulling the black tank valve, I'll also first release some gray tank water first just to ensure all the connections really are tight......
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Old 07-03-2015, 08:19 AM   #20
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Originally Posted by Bumps View Post
When it is time to dump the black tank, you will want a pretty full grey tank so that you can use that water to flush the stinky slinky and push the rest of the solids out. You can leave the grey open until you need to start "storing" grey water in reserve for that black tank "push." \ken

PS. I'm assuming that you are connected to a sewer, right? Don't leave the grey tank open if you aren't!

X2! Totally agree!
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Old 07-03-2015, 08:16 PM   #21
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Originally Posted by Mr_D View Post
That's what I've done for over 40 years and have never had a sewer problem, but, whoever owned the Magna before we bought it didn't And I'm still trying to get it cleaned out.
I had that problem with our MH. I made a flushing wand, even though there is a built-in flushing system. My wand is 3/4" sch 80 PVC, 40" long. I capped one end and drilled a 3/16" hole in the side of the cap, and put a hose thread adapter on the other end. Since I have 110psi water pressure at home, I can rinse out the tank completely. It took me about 10 minutes of flushing to break-up the dried solids in the tank and flush them out. That water pressure would bend the PVC pipe some but it sure cleaned out the tank.
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"
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Old 07-04-2015, 07:55 PM   #22
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Two comments about hooking slinky to rv dump fitting and also fittings connecting two slinky made me laugh as recently I forgot to put the other end in drain fitting at the sewer dump. I managed to get it under control but it was still messy. Stuff happens - hopefully only once!

Beth, Lee and Buster (AKA Busticator, 14# King of All Pomeranians - Protector of His People)
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