Newb owner waste water question.

[Squantobon]

Picked up my new Keystone Cougar 23MLE a couple weeks ago and we're going to be using it soon. I've watched a lot of videos on dumping wastes but I don't think my question has been addressed in any of them.

My trailer is under 28' but the black and gray dumps are well separated. The bathroom and black dump are forward while the kitchen and gray dump is aft.

Would you dump the black and then move the slinky to dump the gray? If so, would you then move it back to the black or just leave it there until the next dump? Seems like it would always be a good idea to chase the black with gray.

I also notice in most of the setup videos that they setup the slinky right away but I'm guessing you don't need to do that for at least a couple days right? I wouldn't think you'd be arriving with Full tanks unless you'd been boondocks a while.

[twinboat]

I have seen a few setups that run both dump fittings to a Y fitting and then to the dump pipe.

They uses at least 3 hoses but it's good for longer stays.

Most times the black tank will last 2 or 3 gray tan dumps, unless your shower runs in the black tank.

[tuffr2]

I would always dump some gray water to coat the stinky before dumping all the black tank then dump the rest of the gray tank to semi clean the stinky.

[Old-Biscuit]

Buy an RV Sewer Hose 'Y' adapter and another length of sewer hose




Then you can set up with 'Y' at the sewer connection
OR
Set up closer to the RV

[Squantobon]

Originally Posted by tuffr2

I would always dump some gray water to coat the stinky before dumping all the black tank

Makes sense. Lube it up a bit to keep it from getting constipated. Or maybe spraying some fresh water in before connecting.

[Newmar2856]

I have a similar setup to the one you’ve described. I don’t hook up a dump hose until it’s time to empty one of the tanks. As someone pointed out, more than likely you will fill your gray tank a couple of times before your black unless something else drains into it like a bathroom sink or washing machine.

Since my gray and black tanks are split, I don’t rinse my hose out by switching it to the gray tank, but instead I’ll use the built in black tank flush to run plenty of water through it to make sure it’s as clean as it can be.

[jaydee325]

Originally Posted by tuffr2

I would always dump some gray water to coat the stinky before dumping all the black tank then dump the rest of the gray tank to semi clean the stinky.

Never heard this before! Sounds like a myth to me.

Plus, in the split dumps described in the OP putting some grey down the hose then move it to black, then back to grey seems like a huge unnecessary hassle.

I believe most sewer dump problems originate from improper use that leads to excessive solids at the point of dumping. Judicious use of toilet paper and not dumping the black tank until close to full helps a lot.

[LETMGROW]

I don't run around and hook up my drain hoses when I first set up. I prefer to keep them out of the sun and harms way until I need to use them. On longer stays I shove the disconnected and capped hoses under my coach where they are relatively safe. I often do rinse the drain hose out with the grey water after dumping the black tank but this doesn't satisfy me so I use one of these to rinse the hose(s) well before storing them away:
https://www.amazon.com/Camco-22999-R...274484597&th=1
I did have one hose damaged by the young son of a campground owner while the young man was running a weed trimmer a little too close to my hoses. He saw what he did and came and told me and said he was sorry. I could see he was sincere so I told him it was OK, I had another hose. About an hour later the CG owner showed up at my door with a brand new hose of better quality than the one I had. I thanked him and he thanked me for being understanding of the situation.

[Squantobon]

I measured and the 2 are 12' apart. I think I'll just move the hose back and forth for a while.

But I think I've figured out a better solution. How's this sound?

I plumb from gray drain to the top of the black tank with a small pump. That would allow me to flush the gray tank through the black system and never have to move the hose.

[john1981]

Originally Posted by Squantobon

I measured and the 2 are 12' apart. I think I'll just move the hose back and forth for a while.

But I think I've figured out a better solution. How's this sound?

I plumb from gray drain to the top of the black tank with a small pump. That would allow me to flush the gray tank through the black system and never have to move the hose.

i have two drains on mine, one for the main bath grey and black and a rear one for the kitchen grey and 1/2 bath black. i always hook up as soon as i get to a site because the front drain is under my slide and it takes all of a couple seconds to do with the slide in vs crawling under the slide when its out. my routine runs like this: back in, plug in the power cord (landing gear is 2x faster with shore power), unhook the truck, hit auto level and hook up water, cable and sewer, then run the slides out then turn on the water. in the summer i always leave the a/c units on so when i throw the breaker they start before im inside and it gives the a/c a head start.

as far as your sewer hose, just buy a 3 piece set at camping world or order one on amazon. its way less risky hooking it up and leaving it hooked up until you can get it flushed out. if you flush your black, then unhook it to walk it to your grey, you know at some point its going to get dropped, then youll have a big mess on your hands. just buy the 3 hose setup and be done with it. adding a pump is way over complicating things, just let gravity do its job, it takes seconds to hook up a bayonet fitting and a pump will be way more expensive than a y hose setup. i think theyre 60$ at cw.

[Old-Biscuit]

Originally Posted by tuffr2

I would always dump some gray water to coat the stinky before dumping all the black tank then dump the rest of the gray tank to semi clean the stinky.

Originally Posted by Squantobon

Makes sense. Lube it up a bit to keep it from getting constipated. Or maybe spraying some fresh water in before connecting.

Originally Posted by jaydee325

Never heard this before! Sounds like a myth to me.

Plus, in the split dumps described in the OP putting some grey down the hose then move it to black, then back to grey seems like a huge unnecessary hassle.

I believe most sewer dump problems originate from improper use that leads to excessive solids at the point of dumping. Judicious use of toilet paper and not dumping the black tank until close to full helps a lot.

Dumping a little grey FIRST is to check for leaks at connections
Less messy then to discover leak when dumping black
Nothing to do with 'coating/lubing' the sewer hose

[LETMGROW]

Originally Posted by Squantobon

I measured and the 2 are 12' apart. I think I'll just move the hose back and forth for a while.

But I think I've figured out a better solution. How's this sound?

I plumb from gray drain to the top of the black tank with a small pump. That would allow me to flush the gray tank through the black system and never have to move the hose.

You are way overthinking a simple process.

[Squantobon]

Originally Posted by LETMGROW

You are way overthinking a simple process.

Certainly wouldn't be the first time. It's kind of a thing with me. But that's how inventors are.