Black water tank light says 2/3 full after draining

I have seen the video where the producer claimed no benefit from ice cubes. The test rig and the testing was much different than real life operation. While he did provide much usable information, the idea that ice cubes are worthless is something that I don' t agree with. While it may not do great things, I'm sure that there is some benefit.

The idea of not using chemicals to reduce odor, because you don't smell it in your rig, perhaps others don't appreciate the stink when you dump. In a crowded campground we have to be respectful of others.

The trick to having accurate sensors is to keep the black tank "clean". Here, "clean" is a relative term. What I mean is to keep the tank free of toilet paper and feces after dumping. The best way to do this is when you get ready to break camp and travel, empty the tank the best you can.....then add about five gallons of water plus a cup of liquid laundry detergent (I use Oxy-Clean....some use Dawn dish washing soap). Travel to you next destination and once there empty the tank once again and add a couple or three more gallons of water back into the tank prior to using the toilet. You may have to do this several times before you really get the tank "clean", but it will definitely work and your sensors will read accurately.

As mentioned, a tank rinse device really helps and a clear connector will keep you informed of not only what is coming out of the tank but also when it is empty. Also, in spite of many people posting about putting ice in the tank....it's been proven that this is a fallacy and does nothing constructive. Another fallacy is the very common use of tank chemicals. If you have an odor inside the rv, you have a problem with a seal, gasket or vent and needs to be repaired. Chemicals are like a band-aid...temporary fix. Use plenty of plain ol water prior to using the toilet, during the use of the toilet, and when dumping the tank.

Good luck and I hope this helps.

Ron

when ever your at a campground with sewer. fill and dump, use your wand to loosen
the Heavy materials. attach a clear neck to view the goodie.

When we use the dump station I have a clear elbow to see when the black tank stops running. Then I completely fill and flush the toilet bowl twice (about four gallons) and check that the water is running clear. The tank is as empty as it is going to get.

Same with the gray tank; dump, fill sink twice and look for clear water. Then I know that it is empty also.

The gauges rarely read empty, especially the black tank.

I also like to keep 5 gallons or so in the tanks so they do not dry out once they are dumped.

A month ago when dumping the black tank, the gauge went from close to full down to 50 percent, then up to 55 percent and then down to 0 percent about 20 minutes later after I'd closed everything up.

You might try this. If the TT is at home, or close by, go see what the gauge is reading now. If it's not reading empty, then when hooked up, pull in someplace, fill it half full of water, and then drive a ways and dump it. The water sloshing around will take care of it. If you don't know where there's a dump station, use of one of the several apps - and I'm making the assumption they work for Canada?

Some people will tell you to dump ice cubes in there, and they should help, but if you're going to do it, dump two 10# bags in there so there's enough in there so they don't all melt before you get out on the highway.

Bill

The shape of the tanks do not lend themselves to accurate readings.

They are broad and shallow. The distance between the probes is small and easily bridged with toilet paper or other crud.

There are numerous compounds you can add to the tank to improve the situation but I have found these to be short lived.

I had as good, albeit temporary, results with a bag of ice dump down the stool before driving to the next camp ground.

Like most folks you just learn how full it is, or you look down the toilet. We know when our gray water tank is full because it will back up into the bath tub. :)

No. What is Black Tank Tuesday?

After I run dump and run the flusher it says E and F. 1/3 and 2/3s are clear. History tells me once a week is time to dump. Ever hear of Black Tank Tuesdays?

Mine works........when I keep it "clean". My rinsing process continues (maybe up to 3 fill & dump cycles) until the light indicates empty. It's at that time my visual of the tank is squeaky clean. :)

Toilet paper an other stick to the sensor and give unreliable readings. Like others have said a through flush should clear it.