This may be an indelicate subject but the matter of choosing the right RV toilet paper and understanding your RV's black tank sensors are critically important to your enjoyment of the RV Lifestyle.
So, being as tactful as I can, let's talk about this.
If you've been frustrated that your black tank sensors don't seem to be giving accurate readings, listen up. As you are about to learn, the sensors are probably just fine.
It's the RV toilet paper that is causing the issues.
RV toilet paper branded as such gets a bad reputation. It's expensive by comparison to household toilet paper and, frankly, a lot softer and more comfortable and convenient to use.
So do you really need to buy toilet paper specifically made for RV use?
In short, yes, you do. However, let’s talk about why you need this and what to look for.
What is RV Toilet Paper, and Why Does It Matter?
RV toilet paper is specifically designed for quick disintegration, particularly in a black tank.
Where regular toilet paper is many layers pressed together, RV toilet paper is many chunks bonded together. This difference allows the sheets to break apart in your septic tank quickly.
How fast the RV toilet paper breaks down can dramatically affect how often you need to empty your black tank. It also determines some of the cleaning factors for your black tank. After all, you don’t want to clean that tank more often than necessary.
One positive thing about RV toilet paper is its environmental friendliness. Many brands are entirely biodegradable. Others use recycled materials.
Selecting an RV Toilet Paper
RV toilet paper is significantly different from regular toilet paper, and many people find the initial difference jarring. You should think of it as part of the experience, as Jennifer and I do.
The key feature when you’re choosing an RV toilet paper is strength. You don’t want it to fall apart mid-wipe. Fortunately, RV toilet paper manufacturers know this.
Another critical factor is absorbency. You do not want to wipe only to find the toilet paper left a mess behind. If you desire to test this, see how much spilled liquid an RV toilet paper picks up from a counter.
The final technical thing you should look for is dissolvability. If you find the paper does not dissolve quickly after use, it will clog your black tank. Either the toilet paper must change, or your black tank treatments do at that point.
Those are all the measurable factors of RV toilet paper. However, you should also try a few different brands for comfort. You are the one who must use this toilet paper, and it should not be something you dread.
The Home Toilet Paper Test
Generally, we do not recommend trying to use regular home toilet paper in your RV. The chance of clogs and backed up toilets that ruin your trip is simply too great. However, you can use this test to see how your RV toilet paper stacks up.
To begin, find a container with a lid that you can shake. Then fill the container roughly three-quarters full of water. From there, add the number of toilet paper squares you use in a typical wipe. Then shake vigorously.
If the toilet paper dissolves within about ten seconds, it’s suitable for use in your RV.
This quick dissolution means that the liquid materials in your black tank can dissolve the toilet paper before it creates a mess.
If the toilet paper does not dissolve within the allotted ten seconds, you should keep that toilet paper far away from your RV’s black tank. That toilet paper will clump, not dissolve, and cause you black tank headaches.
Understanding the RV Black Tank
RV septic systems vary significantly from their home counterparts. Even if your home is on a septic system, the RV system is more delicate since it is smaller and must drain regularly.
The black tank is your primary concern, but all modern RVs also have a grey water holding tank. The grey water tank holds the liquid from showers and sinks.
Each of these tanks must be emptied. However, RVs do not have mechanical assistance for emptying these tanks. It depends on you hooking up the hoses correctly. t also depends on gravity. As you know, gravity is not the most discerning force.
That is why the toilet paper you use in an RV must dissolve. Clumps are heavier, regardless of the composition. If things do clump, you could have solids left in your black tank even after emptying. That can give you false readings on the black tank sensors.
Assuming you have the right RV toilet paper and everything has dissolved appropriately, emptying the black tank into a dump station should be a simple matter of hooking it up and letting it run until you cannot hear any more liquid ging down the pipe at the dump station.
Always drain the black water tank first. Then empty the grey water tank. Not only does this get our the grey wastewatwr, but also the liquid from the grey tank also flushes any leftover solids from your sewage line.
The Problem with RV Black Tank Sensors
Unfortunately, sometimes using RV toilet paper is not enough to prevent black tank issues. In particular, the sensors of your black tank can cause lots of headaches.
Typically, black tank sensors are placed up the sidewall of the black tank at the empty, one-third, two-thirds, and full marks. Theoretically, these black tank sensors trip when the black tank waste reaches each level, letting you know how long until you need to find a dump station.
Sometimes, the black tank sensors do not work like they are supposed to. Rarely is this an electrical issue. More often, the faulty readings are due to waste buildup on the sensors. This buildup can happen quickly when you do not use RV toilet paper.
The first thing you can try is adding a tablespoon or so of Dawn dishwasher soap to your tank. This dish solution breaks down grease, which in turn breaks up clumps of waste. Combined with a little water, it can work miracles with the black water sensors.
The next step is trying a digestant, which breaks down most varieties of waste found in your black tank. These are mixed with about half a tank of water and left to sit to break down the tank contents.
Most do double duty as a deororizer.
A good dedorizer/digestant should be regularly added to the black water tank to control odor and break down any solids.
We have had great success with a product called Happy Camper. One scoop treats about 40 gallons of waste in a black water tank and of all the products we've tried, this is the best one. We get the bucket that has 64 treatments. It costs about $45 at Amazon. Here's a link – https://amzn.to/2TbTmc9
If that still does not work, you can try adding a little movement. Some people swear by filling the tank half full of water, add the recommended amount of digestant, and then add a bag of ice.
All you need to do is drive around a little bit, and the ice should scrape off the stuck waste, they say. Then empty the tanks at am RV dump station'
If your black tank sensors are still not reading correctly, you may need professional tank cleaning.
It may also be the actual black tank sensors, though that is the exception to the norm.
In any case, if in doubt take your RV to a professional maintenance shop for their opinion.
And always, use RV or marine toilet paper.
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