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Anmacc2's avatar
Anmacc2
Explorer
Jul 05, 2015

Gray tanks question

I'm 3500 miles into my 6000 mile trip with my new TT. We've been doing a combo of boondocking and campgrounds. When boondocking, one gray tank fills but the other stays empty.... What am I doing wrong? Is there a switch/valve/anything? This is my first TT with dual gray tanks. Any help is appreciated!

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  • enblethen's avatar
    enblethen
    Nomad
    Jul 05, 2015
    Some rigs have the galley on one grey tank, the bath and or shower on another. Are you using all of the facilities in the rig?
    If you are going by the monitor gauge, forget it and dump. They are not very accurate or may not even be working.
  • gbopp's avatar
    gbopp
    Explorer
    Jul 05, 2015
    I believe on some units one tank is filled by the shower/bath sink.
    The other tank is filled by the kitchen sink.
    Or some similar setup.
    Could it be you're not using one sink often enough to fill the second tank?
    Maybe I'm totally wrong and there's a valve you're missing.

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