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Old 10-03-2022, 11:53 AM   #15
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We use the

Geo Method

It has helped keep things cleaned and the walls slick. I do it about 2 or three times a year and use dawn dish soap more often. Has worked well
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Old 10-03-2022, 11:55 AM   #16
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Here is the answer if you have a pressure washer. Put the right-angle adapter on the sewer output with the sewer hose connected. Just bore a hole in the vertical part of the right-angle clear sewer adapter large enough for the hose and nozzle to go through. Feed it up into the tank and let 'er rip!

https://www.amazon.com/Jetter-Pressu...2s9dHJ1ZQ&th=1

https://www.amazon.com/Camco-39857-R...%2C593&sr=8-27
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Old 10-03-2022, 08:19 PM   #17
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Quote:
Originally Posted by MSHappyCampers View Post
Here is the answer if you have a pressure washer. Put the right-angle adapter on the sewer output with the sewer hose connected. Just bore a hole in the vertical part of the right-angle clear sewer adapter large enough for the hose and nozzle to go through. Feed it up into the tank and let 'er rip!

https://www.amazon.com/Jetter-Pressu...2s9dHJ1ZQ&th=1

https://www.amazon.com/Camco-39857-R...%2C593&sr=8-27
WoW! If that doesn't break up the pyramid it's time to replace the tank.
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Old 10-04-2022, 08:56 AM   #18
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Quote:
Originally Posted by Davidrvr View Post
We use the

Geo Method

It has helped keep things cleaned and the walls slick. I do it about 2 or three times a year and use dawn dish soap more often. Has worked well



I've been led to believe you should use dishwashing liquid rather than dish soap to do this due to the suds produced by the soap. Is one really better than the other?
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Old 10-04-2022, 09:44 AM   #19
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You want sudsing to to insure a wetting of all surfaces of the tank.

You want soft water to insure both breaking down of the suds as well as insuring hydration of solids and breaking down suds.

The “Geo” method isn’t an overnight solution (none of them are) - it’s a practice.

Once one gets past the fact that black and gray tanks are not bio-digesters (as a conventional septic system is) - then a basis for understanding can then begin to be built.

And that understanding is - the only difference between the inside of a black or gray tank, and a 5 gallon outhouse pail is - you can clean the 5 gallon pail with mechanical means to include a sponge and a little elbow grease - something typically not possible inside of a black or gray tank.

Spray bars and wands are the next best thing to the sponge and elbow grease. But following good practices will minimize the need for such devices (if you got ‘em, use ‘em - but to go to the expense of having installed makes no sense onto me. YMMV )
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Old 10-05-2022, 12:51 AM   #20
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The guy who "invented" the geo method used to be a member of irv2.com but when he couldn't sell his idea he went elsewhere. IMO it's a waste of money and time.

I've used only water for the past 9 years and never had a problem. A group of full-timers coaxed me to try just using water, so eventually I did, and never looked back.
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Old 10-05-2022, 08:09 AM   #21
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X2 on the above. I still have two boxes of the stuff in my basement.

Dump black tank.
Partially refill with water through built in sprayer and dump again.
Use a transparent fitting to see if everything is out.

Periodically add about 1/4 tank of clean water. Drive 100 miles and dump.
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Old 10-05-2022, 04:27 PM   #22
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Only used water.... 16 yr. of full-timing with daily use.
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Old 10-05-2022, 07:24 PM   #23
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The pyramid is no more !

Smashed that sucker (pyramid) with a stir stick and several fill / drain cycles later can see a relatively clean black tank bottom 😁. Refilled half way with water and some dish soap and letting it sit for a few days until we’re back at the trailer. Ordered some unique digester liquid enzymes (thanks Biscuit) to keep it that way going forward. I really appreciate the support.
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Old 10-06-2022, 01:27 PM   #24
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Sometimes you have to get violent to get something's attention. Keep putting the water to it and it will still get better.
After you dump your tank add water to the tank. I add 5 gallons of water each time I've emptied my tank. This means I have to fill the toilet bowl 8 times to get the full 5 gallons. When my tank gets above 1/2 full I fill it the rest of the way up before I dump it. The whoosh of rushing water out of the tank will help carry paper and solids out of the tank which will tend to lessen the chance of another buildup.
It's better to dump a tank too often than not often enough.
Glad to hear you've made progress.
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Old 10-06-2022, 02:57 PM   #25
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I hope those looking down the toilet with a flashlight are using a big square one that will not fit down the hole. Imagine what all problems that dropping in could cause.

We never had a problem with our first two trailer's black tanks by just holding until they were at least half full and dumping. Then we got what acted like a pyramid in the third trailer. I had to guess the problem because our pipe had a bend in it preventing a flashlight inspection. I found Unique at the local RV store and treated with the Black tank cleaner letting it sit for a day. Problem solved. I now use their holding tank maintenance treatment after every dump, and keep a bottle of the cleaner for emergencies. I believe Unique suggests using the cleaner once a year, but I've had no problems since by using their regular treatment product which gets added after every dump. We get no odor when using the recommended amount, and use nothing else. Odor killing products can kill the good backteria in the product. This product couldn't be more evironmentally friendly.

Side note: the first two trailers had dished bottom holding tanks. I believe that kept a reserve of water preventing a pyramid problem. The third trailer has a square bottom holdin less residual. So, now 5 gallons a water along with Unique gets added after every dump.
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Old 10-07-2022, 01:14 AM   #26
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Eat less fiber! Sorry, couldn’t resist.
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Old 10-07-2022, 08:21 AM   #27
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Quote:
Originally Posted by LenR View Post
I hope those looking down the toilet with a flashlight are using a big square one that will not fit down the hole. Imagine what all problems that dropping in could cause.
I've used my phone flashlight twice to look down the rabbit hole. I had a tight grip with the same thought above lol
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Old 10-12-2022, 08:53 PM   #28
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Black Tank buildup

I purchased a "Swivel Stick" from Amazon; "CAMCO RV FLEXIBLE SWIVEL STICK" like $20.00. Talk about AWESOME!!!! This really flushes and cleans the black tank. I was in your situation when I bought my RV a few years ago. Fought it until I ran across the Camco Stick about a year ago. You need to clean and flush your tank? Buy one...It works. I now use it to flush the tank after I dump. I also Dump the black tank first then the gray tank which helps flush the pipes.
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