Bcoem11
So, heads up for other new owners. After a rather vague hint posted here I did some research on the mysterious mentioned “pyramid “ related to our back water tank with water shut off and a flashlight.  I know realize the importance of dragging the water hose into the trailer while at the dump station.  And using a spray nozzle on high.  I am sure some old timers are getting a chuckle at this.  I just thought it might be helpful to other newbies like myself.  And then I see there are also all kinds of wonderful whirlygigs you can also attach to your hose. 😎
Quote 0
sunvalleyjoe
I have using a 5 gallon bucket of water. Close gray water drain and open black water valve. One or two buckets of water and a little Pine Sol help flush out and sanitize the tank. GBA!!SVJ
Quote 0
Bcoem11
You are the Man!!  Great idea with pine sol
Quote 0
sunvalleyjoe
I bought one of those water wands and it got messy after a while good luckGBA!!SVJ
Quote 0
mkevenson
The water wand is my friend. I have tried the back flush attached to the drain but after climbing in the tank I see that the wand is king. Never tried the pine sol but sounds good.
Mark
Please buy Made in USA
Quote 0
Bcoem11
I was really considering the back flush, but you would not recommend Mark?
Quote 0
mkevenson
Bcoem11, I prefer the wand. I can direct the spray and feel confident that it is getting the B tank clean, Or as clean as I can. The backflush that I bought hooks to the exit pipe and then a hose is attached to it. Supposedly there is enough water pressure to fill the black tank backwards but I have my doubts. May be wrong but if you want one I will sell you mine, only used once.
Mark
Please buy Made in USA
Quote 0
sunvalleyjoe
Hey you No sale pitches.ha ha
Quote 0
Ralph L Staub
There are a lot of ways people have tried to make this easy... built in spray systems, putting ice in the tank while driving, the back flush nozzle... nothing works better than the wand, IME. It’s a pain, and it can be messy, but it’s very effective. Finish out with some pine Sol
Quote 0
John
A hint on what I learned years ago. If your trailer sits a long time while you  use the toilet, don't leave the black water valve open to the sewer. If it is open, the water will flow but the toilet paper and "you know what" will cake to the sides of the black water tank. This will continually restrict the usable area of the tank. You will need a "flash bang" to clean it out. The way to use the tank is let it fill as if you were on the road, then empty it as normal, and close the valve until next time.
Quote 0