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Old 05-05-2016, 03:00 PM   #1
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Black water tank

Need advice quick! Tank is filling up with solid waste and, being t t rookie, I can't deal with the problem. We are living in 1 location...no moving. What exactly is the GEO method? Something to do with Calgon? ...or is there a way to empty the tank with pressure washer? Please give sufficient details...
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Old 05-05-2016, 03:23 PM   #2
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The Geo method depends on a significant amount of movement to work ( if it actually works). If you are in a permanent site, it is useless. Bigger question is why you are getting buildup. Make sure you have the black water dump valve closed during normal use. Once the tank gets almost full, open it and drain the tank then close it. It sounds like you may be leaving it open all them time. Both waste tanks depend on the sudden rush of a large quantity of water to empty the contents ( especially solids) from the tank. In your circumstance, I would close the black water valve, fill the black tank with water and any one of the treatments that breakdown solid waste ( not the formaldehyde type that only covers odor). Let is sit overnight and dump in am. Continue doing this until the tank empties. You can also try a tank flushing wand if you do not have a black tank rinse device built in. If it is really bad, and you have a straight drop toilet, you nay need to break things up with a long stick. Bottom line, Keep the black dump valve closed during normal use.
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Old 05-05-2016, 03:28 PM   #3
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The GEO method is not directly related to your present quandary.
If you go outside and look under your travel trailer, you will see at least one pair of 'T' handles. One may be grey and the other black. They are usually on each side of a three inch PVC pipe that should have a cap on it. On the side of the camper may even be a label that identifies these valves as waste dump valves, gray water valve, black water valve, or similar. If you are at a campsite that has full hookups, there will be a hole in the ground (PVC pipe) usually with a flip up cover or a screw in cap. This is the sewer hook up. You need a sewer hose (stinky slinky) to connect your 3" PVC pipe to this sewer line. Once the two are connected, open the black tank drain valve and allow to drain completely, then close that valve and open the grey tank valve, allowing that one to drain completely. You are now finished until such time as you are ready to break camp, when you will drain both tanks again, and flush the black tank by adding water to it (through the toilet) and draining it until it runs clear.
The geo method is simply the practice of adding some water with Calgon and soap to help dissolve deposits that render the tank level sensors inoperative.
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