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04-15-2016, 03:41 PM
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#1
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Cutty
Join Date: Feb 2016
Location: Southeast
Posts: 84
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Empty Back Water tank is empty but read 2/3
Empty Back Water tank is empty but reads 2/3. I have emptied my black water tank flushed it put some Pine Sol in it w/water and get home and it reads 2/3 full. When I open drain connect/valves shut, it dumps out a gallon of goop I'm not wanting to smell or see all over my driveway! What should I look for and why after emptying it still reads 2/3 full and has stuff left in the drain pipe when I get home? The movie RV comes to mind! Ha Ha (not)
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04-15-2016, 03:49 PM
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#2
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Gold Miner At Heart
Join Date: May 2015
Location: N.C. Blue Ridge Mtns.
Posts: 293
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Well first of all its not uncommon for the meter to show 1/4 2/3, etc when empty. However it's possible that you could have a clog if your still getting stuff out. Do you have a black tank flush? If not I would recommend buying a black tank sprayer that you hook up with a water hose and stick down in the toilet.
__________________
“I have tried to live my life so that my family would love me and my friends would respect me. The others can do whatever the Hell they please!” —John Wayne
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04-15-2016, 03:55 PM
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#3
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Senior Member
Join Date: Feb 2008
Posts: 196
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I am assuming from your problem that you do not have a black tank rinser. You probably have stuff stuck to your sensors.
While you were out camping, did you leave your tank valves closed? You should leave these closed and dump the black tank first at the end of your camping while it is full of liquids and solids. If you leave the valve open, the liquids leave your black tank and you are left with a glop ( technical term ) of solids. Then dump your grey tank to flush out the connection.
Good luck,
Don
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Don and Michele
3 Adult Children - 5 Grandchildren
Present campsite - future homesite
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04-15-2016, 04:06 PM
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#4
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Senior Member
Join Date: May 2015
Posts: 1,397
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I've never, read NEVER, had an accurate black water sensor reading in any RV I've ever owned. I know me and my DW can go (no pun intended) about one week with moderate usage before needing to dump. I don't lose any sleep over the sensor readings.
__________________
--2005 F350 Superduty Crewcab, 6.0, 4wd, short bed, 3.73 gears;
--2016 Montana 3711FL, 40'
--2014 Wildcat 327CK, 38' SOLD
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04-15-2016, 04:30 PM
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#5
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Georgia Rally Coordinator
Join Date: Jun 2015
Location: GA
Posts: 24,357
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Next time dump then add about 2 gal water and a bunch of ice flushed down toilet Will clear it right up by the time you drive home. Later RJD
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2020 Shasta Phoenix SPF 27RKSS (sold)
2018 Dodge Ram 2500 6.4 3:73 gearing. Traded 2015 Chevy 2500 6.0, 4:10
Traded 2015 30WRLIKS V-Lite
Days camped 2019 62
Days camped 2020 49 days camped 2021-74 2022-40 days 2023 5 days
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04-15-2016, 04:48 PM
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#6
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Senior Member
Join Date: Feb 2016
Location: Greater Houston Area
Posts: 116
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Quote:
Originally Posted by Papa-t
Well first of all its not uncommon for the meter to show 1/4 2/3, etc when empty. However it's possible that you could have a clog if your still getting stuff out. Do you have a black tank flush? If not I would recommend buying a black tank sprayer that you hook up with a water hose and stick down in the toilet.
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+1
I do not use it every time but when I get a false reading, I will whip it out and rinse out the tank. Has worked every time so far.
Got mine at WalMart for less than US$20. Has a metal spinner on the working end that is driven by the water pressure of the hose.
Never have used the flush feature. The wand works great and I do not have to run back and forth worried that I might overflow the toilet and uses FAR less water with the same results.
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2016 Jayco Eagle 330RSTS = " Madame Maxime"
Maxxis M8008 E rated Tires and 16" Wheel Upgrade
Dual A/C, 14K Equalizer WD hitch with SC
King Bed with Java Interior, (2X) Yamaha EF2000isV2
2012 Ram 4500, 6.7L Cummins TD, MegaCab = " Hagrid"
360 degree Virtual Tour
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04-16-2016, 11:49 AM
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#8
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Left Coast
Join Date: Dec 2014
Location: vancouver,washington
Posts: 15,649
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Quote:
Originally Posted by Fairenatic
+1
I do not use it every time but when I get a false reading, I will whip it out and rinse out the tank. Has worked every time so far.
Got mine at WalMart for less than US$20. Has a metal spinner on the working end that is driven by the water pressure of the hose.
Never have used the flush feature. The wand works great and I do not have to run back and forth worried that I might overflow the toilet and uses FAR less water with the same results.
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When using factory tank flush, if you have a clear elbow connector on the sewer hose, leave the valve open and you won't have to worry about overflow'n thru toilet...and you can see the flow and color...you're look'n for clear water!
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04-16-2016, 12:01 PM
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#9
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Member
Join Date: May 2015
Location: Copperas Cove, Texas
Posts: 44
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I think all RV manufacturers should include a disclaimer above the Action Panel. "Tank sensors are included solely for entertainment purposes and should not be considered a true indication of tank levels"
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Coming Soon.....To A Campground Near You!
2015 FR Rockwood Ultra Lite 2304 DS
2014 Nissan Titan CC SV
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04-16-2016, 12:04 PM
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#10
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Left Coast
Join Date: Dec 2014
Location: vancouver,washington
Posts: 15,649
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Dipsticks would of been a better choice! Oh wait....a dipstick did design the sensors..
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04-16-2016, 12:38 PM
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#11
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Junior Member
Join Date: Aug 2010
Posts: 22
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Dishwasher detergent
Quote:
Originally Posted by bbcutright
Empty Back Water tank is empty but reads 2/3. I have emptied my black water tank flushed it put some Pine Sol in it w/water and get home and it reads 2/3 full. When I open drain connect/valves shut, it dumps out a gallon of goop I'm not wanting to smell or see all over my driveway! What should I look for and why after emptying it still reads 2/3 full and has stuff left in the drain pipe when I get home? The movie RV comes to mind! Ha Ha (not)
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I have used dishwasher detergent with excellent results. Fill the tank with fresh water about 1/3 full. Get a bottle of dish washer detergent from the dollar store and add it all to the tank. Drive for a few miles and PRESTO working again. Pine sol makes it smell better but thats about it.
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04-16-2016, 12:56 PM
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#12
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HikerBob
Join Date: Nov 2013
Location: Cedar City, Utah
Posts: 229
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Quote:
Originally Posted by bob caldwell
Dipsticks would of been a better choice! Oh wait....a dipstick did design the sensors..
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Ha,Ha,Ha - Couldn't have said it any better. The Calgon system works the best of all.
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04-16-2016, 01:19 PM
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#13
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Senior Member
Join Date: Feb 2013
Location: Pfafftown NC
Posts: 2,353
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Quote:
Originally Posted by bob caldwell
Dipsticks would of been a better choice! Oh wait....a dipstick did design the sensors..
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good one. 👍
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04-17-2016, 01:37 AM
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#14
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Senior Member
Join Date: Feb 2016
Posts: 114
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Quote:
Originally Posted by bbcutright
Empty Back Water tank is empty but reads 2/3. I have emptied my black water tank flushed it put some Pine Sol in it w/water and get home and it reads 2/3 full. When I open drain connect/valves shut, it dumps out a gallon of goop I'm not wanting to smell or see all over my driveway! What should I look for and why after emptying it still reads 2/3 full and has stuff left in the drain pipe when I get home? The movie RV comes to mind! Ha Ha (not)
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https://sites.google.com/site/cbruni/
I follow the steps at this link consistently and I find I do not have any problems. If you don't have a clear elbow, I'd suggest investing in one. You can get a Camco model at Walmart for about $8.
http://www.walmart.com/ip/Camco-Sewe...apter/29764318
One more thing: Why are you dumping your tank on your driveway?????
__________________
2008 Wildcat 29RLS
2016 Chevy Silverado 2500 HD
4x4 z71 Crew Cab Duramax/Allison
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04-17-2016, 07:05 AM
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#15
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Gold Miner At Heart
Join Date: May 2015
Location: N.C. Blue Ridge Mtns.
Posts: 293
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Quote:
Originally Posted by bob caldwell
When using factory tank flush, if you have a clear elbow connector on the sewer hose, leave the valve open and you won't have to worry about overflow'n thru toilet...and you can see the flow and color...you're look'n for clear water!
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X2
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04-17-2016, 07:10 AM
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#16
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Gold Miner At Heart
Join Date: May 2015
Location: N.C. Blue Ridge Mtns.
Posts: 293
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Baco88fan whatcha doing up at 2:37AM? And where did bbcutright go? I hope the clog didn't get him..
__________________
“I have tried to live my life so that my family would love me and my friends would respect me. The others can do whatever the Hell they please!” —John Wayne
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04-17-2016, 07:14 AM
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#17
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,268
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Since changing out my gray and black tank probes with Horst Miracle Probes, my tank indicators have worked perfectly now for over 4 years.
http://www.forestriverforums.com/for...ion-16089.html
Horst Mircacle Probes - Get accurate reading on your RV's holding tanks
Note: Other than being a VERY happy user, I have no financial interest in this, or any other product, I have recommended.
Additionally, ALWAYS use lots of water in your black tank in order to assure that the solids stay afloat or do not stick to the bottom of the tank.
NEVER dump unless that tank is almost full. That way there is plenty of water pressure and circulation in the tank to get most of the solids out during the dump process.
Having an "end of mast" shutoff valve also allows one to partially dump the gray tank (with its soapy water) into the black tank for a second black dump to get any of the remaining crude out; just remember to only do the transfer once and for only a minute or so in order to keep water flow from the gray TO the black and not allow the reverse.
I also use the "shielded" (black tank) probe in my gray tanks since the gray/fresh style (coil) seems to attract hair.
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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04-17-2016, 09:03 AM
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#18
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Member
Join Date: Jan 2016
Posts: 91
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Quote:
Originally Posted by Herk7769
Since changing out my gray and black tank probes with Horst Miracle Probes, my tank indicators have worked perfectly now for over 4 years..
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X2 on the Horst Miracle Probes.Installed them on my Jayco and they worked great. Haven't put them on the new rig yet since I don't feel like removing the underbelly enclosure. I suspect I'll do it eventually though as they seem to be the only fix for this age old problem that affects all RV owners.
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2020.5 Cedar Creek Hathaway 34IK
2023 GMC SierraHD Denali Ultimate 4WD DURAMAX
Bosco the Golden Doodle
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04-17-2016, 05:05 PM
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#19
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Senior Member
Join Date: Feb 2016
Posts: 114
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Quote:
Originally Posted by Papa-t
Baco88fan whatcha doing up at 2:37AM? And where did bbcutright go? I hope the clog didn't get him..
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I don't sleep so 2:37 am is a good time to learn and contribute.
__________________
2008 Wildcat 29RLS
2016 Chevy Silverado 2500 HD
4x4 z71 Crew Cab Duramax/Allison
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04-18-2016, 06:25 AM
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#20
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,268
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Quote:
Originally Posted by bbcutright
Empty Back Water tank is empty but reads 2/3. I have emptied my black water tank flushed it put some Pine Sol in it w/water and get home and it reads 2/3 full. When I open drain connect/valves shut, it dumps out a gallon of goop I'm not wanting to smell or see all over my driveway! What should I look for and why after emptying it still reads 2/3 full and has stuff left in the drain pipe when I get home? The movie RV comes to mind! Ha Ha (not)
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So, assuming you don't want to replace your probes right away, here is how to clean your tanks so the indicators indicate properly.
1) Flush out tank as best you can with turbo-flush or toilet wand. Close your valves and add 1 pint of Unique's RV-DIGEST_IT to the black and gray tanks. Fill the tanks with cool water to the top.
2) Let sit for a minimum of 3 days; 7 is better.
3) Dump and repeat if needed.
To keep tanks clean and probes working as best as you can.
1) Dump and flush tank with internal washer or toilet wand.
2) Add 5 gallons of water to black tank and add 1 capful of CALGON water SOFTENER (not salt!) and 1 capful liquid laundry detergent.
3) ALWAYS add about 30 seconds of flush water with solids and use RV toilet paper.
3) Wait till tank is full (or near full) before repeating above.
You will dump more often, but your black tank will be clean and function properly. As a plus your tanks will never smell.
http://www.amazon.com/Unique-Natural...s=rv+digest+it
http://www.amazon.com/Camco-40074-Fl...s=tank+wand+rv
http://www.amazon.com/Camco-40126-To...=RV+tank+flush
http://www.amazon.com/Septic-Toilet-...nk+flush&psc=1
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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