When to dump?

Yup makes like a pod volcano!

Originally posted by howmanyds The warning label next to the black water tank flush inlet says to only use it when the "fullway termination valve is in the open position." I think that means to only use it when the black water valve is open and draining through the sewer line, correct? I imagine this is because of air/water exchange. So, when I want to fill the tank in order to drain it, and then fill it again to rinse, could I use this valve as long as I've propped open the toilet flusher instead of the drain valve? Or do I have to bring the hose in through the bathroom as others have mentioned?

There isn't any kind of air lock issue, the black tank is vented through the roof.

The reason they don't want you to use the BWF with the valve closed is.. if you get distracted.. It will fill the tank.. then start filling the vent tube.. then start flowing all over the roof and outside of the pod. REALLY. It has happened. To pods I know. The exact same thing can happen with a hose in the toilet.. except the roof vent on the outside of the camper won't be the overflow point. The toilet will be. And that will be flowing all over the inside of the pod. OK, technically it will have to fill the grey tank first.. but, well, you forgot it already.. so..

All that said. I fill and flush a couple times, a couple times a year. I have FHU at home, so it's easy and convenient. I use the timer function on my phone (because I get distracted easy). It takes our hose about 5 minutes to fully fill the black tank.. At four and a half minutes or so, I open the dump.

Re Black water cocktail:
Shaken, not stirred.

I call dropping ice cubes in my black water my black water cocktail...

One way to do it, yes.. though I see no need..

We don't have a black tank flush, and use a "Johnny Chock" to hold the toilet valve open and send water down that way if we feel the need.

BTW, a well positioned Tervis tumbler was just about the best toilet lever wedge I ever found. The new 16oz tall microbrew cans do a fine job also.. (in case you might have one laying around at the end of the trip..)