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Old 08-24-2015, 12:26 PM   #1
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Black tank finally clean

Finally got the black tank clean for probably the 3 or 4th time since 2007 when I bought my rig.

my black tank didn't come with an installed flush fixture, my dealer has been reluctant to install one for me, and I am mostly too tired to argue or put one in myself.

that said, I have found a way to get my tank clean - use lots of water. Flushing the toilet for 2 minutes didn't do the trick as it drained to just a trickle and the sensors still showed 2/3 full. Adding chemicals also were just marginally effective, but did help.

Finally, I used a wand and filled the tank full, then drove to the local dumpsite. I emptied the tank - than had to fill FULL and dump three more times for the water to come out clear. dragging a hose through the trailer to the toilet is risky at best, but it was my only option. Luckily, there wasn't a waiting line at the dump site.

Afterwards I bought a faucet adapter to allow my wand to be attached to my bathroom sink faucet. Now I need a short length of light-weight garden hose.

Now I have to get my grey tank cleaned so that sensor reads empty.

Tim,
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Old 08-24-2015, 12:53 PM   #2
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My gray tank sensors were not reading accurately. I have no flush system. After dumping lately, I have been pouring a few gallons of water down into each waste tank with about a 1/2 cup of liquid fabric softener. I notice yesterday my tanks are reading empty.
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Old 08-24-2015, 08:32 PM   #3
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My blackwater reads 3/4 full even when M/T..I just bought it this year, 2006 x23b. Someone suggested driving to my next location with 2 gallons of water and two bags of ice in the blackwater hold...Has anyone tried this?
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Old 08-24-2015, 09:35 PM   #4
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Quote:
Originally Posted by Leo801 View Post
...Someone suggested driving to my next location with 2 gallons of water and two bags of ice in the blackwater hold...Has anyone tried this?
Yup. Works ok, if it is not caked on old stuff in there. Our had dried up stuff in it when we bought it. Filled black tank half full with water and let it sit for a couple weeks then went to dumpstation. Dumped and filled several times and used a wand to power wash the inside of the tank through the toilet. Like the OP, took several times, but it will all come out.
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Old 08-24-2015, 09:53 PM   #5
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Yes, and it did not work for us.
We could not get much ice down the toilet.

We do a "Royal" flush on our last day out.
To explain... first, we fully drain the black water tank; then with black water value still open, we quickly pour 5 gallons of fresh water into the toilet.

No, our black water sensors do not work. They only worked for the first season we had the TT.
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Old 08-25-2015, 03:09 AM   #6
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I noticed with our Jayco trailer the black tank takes several attempts to get clean. I installed a tank cleaner and that helped but compared to other trailers I've had the tank is just harder to clean. The best advise is to dump it when it's full and
keep it clean between trips. I am going to add some calgate water softener to the tank to make it flush out better. I've also heard that Ridx now makes a product for RV tanks so thought I would check that out.
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Old 08-29-2015, 11:52 AM   #7
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There is a series of youtube videos from a guy who built a simulated, clear plastic black water tank and experimented with various methods to get the gunk out. Interesting results.

an installed black water nozzle and lots of water flow rate from a full tank was really the only way to get a tank clean.
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Old 08-29-2015, 04:10 PM   #8
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x2 what tjpolsin says. I have a couple of dump sites near my home which have hose spigots. I always carry an extra hose and run it inside the TT with a wand hooked to it. After draining the black tank, I use the wand and thoroughly spray out and rinse the tank.
Look on you tube for "the fit RV" for the guy who built the clear tank to simulate the many different cleaning styles and methods.
One more thing which can help out. If your TT is going to be sitting for a couple of weeks from one use to the next, dump about 5 gallons of water into it with a couple doses of chemical to allow the chemical to work a while and soak into anything that may be left stuck. Then, fill the tank to full with a cup of borax, and go dump it.
I am actually able to stick a mirror wand down my toilet and my tank is as clean as the day it was purchased.
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Old 08-29-2015, 04:27 PM   #9
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Before we left the state park last week, I dumped the tanks. Their dump station did not have a hose connection for my black tank flush, but I have a dump station and hose connection at home.

After returning home I used it to run the black tank wash. It was interesting to see how much dirty residue was left in the tank. Merely dumping the tank left a lot in there! After hitting it with the tank flush, however, the effluent was soon running clear. The black tank flush system is very effective.
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Old 08-29-2015, 04:41 PM   #10
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NC Roamer watch the videos put out by thefitrv on you tube. It was informative and surprising regarding black tank flush kits and other devices, and how much we think they work but the reality is... The only thing he does not test is the use of a wand. Also, he has a nice test on toilet paper. I was surprised at the results and now utilize the Charmin brand.
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