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Old 08-23-2014, 04:56 PM   #11
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Have you not used the black tank flush? The work pretty well.

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Old 08-24-2014, 09:51 AM   #12
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your original question asked if you can completely empty the black tank. you cant!!! I have a 2014 heritage glen BH 3200, and it does not empty completely. if you shut off the fresh water and look down the toilet, there is 3/4 to 1" of liquid left behind. forest river did a horrible job with this set up. I used an inspection camera to look inside my tank, there is no taper to the floor. I back flush for 15 minutes, plus I fill the tank, through my toilet with a hose a few times. I fill the tank full and then pull the drain valve, this helps. when I'm done camping for the year, I trailer it home with the cap on the outlet pipe, and the black tank valve open. I then drain the clear liquid out of the pipe in a 5 gal bucket. be careful taking the cap off, go slow!!! good luck

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black, black tank, tank

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