Reddit reviews Camco Dual Flush Pro Holding Tank Rinser with Gate Valve- Thoroughly Cleans Entire Septic System and Breaks Down Tough Clogs in Pipes (39062)
We found 2 Reddit comments about Camco Dual Flush Pro Holding Tank Rinser with Gate Valve- Thoroughly Cleans Entire Septic System and Breaks Down Tough Clogs in Pipes (39062). Here are the top ones, ranked by their Reddit score.
Convenient way to clean the entire septic systemForces water back up into plumbing lines to break up clogs in pipesAllows to backfill and flush black and grey water tanksAnti-siphon valve and complete valve assembly includedClear, break resistant polycarbonate adapters make it easy to see when the tank is done rinsing
There is a back-flushing attachment you can put on your drain pipe (where you would ordinarily attach your sewer hose). You attach the device to the sewer outlet, then attach your sewer hose. It has a place to attach a garden hose (not your white fresh-water hose, obviously). It's constructed with a valve on either end.
Something like this (but lots of companies make them):
https://www.amazon.com/Camco-Holding-Rinser-Thoroughly-39062/dp/B000BUQOAE/ref=sr_1_4?ie=UTF8&qid=1521057870&sr=8-4&keywords=rv+black+tank+flush
You basically close the valve that leads to the sewer and open the valve that leads back to your black tank. Close the gates on all your gray tanks!! Then you open the gate to the black tank and turn on the water (connected to the garden hose). Let the black tank fill to nearly full, turn off the water, then open the valve leading to the sewer.
The device is clear so you can see all the muck flowing through. Just repeat this process until the outflow is mostly clear.
Do you see water or just #2 looking down the toilet hole?
Are you sure the dump valve is actually opening?
Do you have a black tank flush feature?
You might want to try something like this to fill the black tank from the outside to see if it loosens anything:
http://www.amazon.com/Camco-39062-Flush-Holding-Rinser/dp/B000BUQOAE/ref=sr_1_1?ie=UTF8&qid=1396915174&sr=8-1&keywords=tank+flush
Could also try to blast it out from the top:
http://www.amazon.com/Valterra-A01-0184VP-Master-Blaster-Tank/dp/B000BGHYDO/ref=pd_sim_auto_33?ie=UTF8&refRID=0VH1YZD0GHN2QGKEEADF