Bob_VaughnExplorerDec 04, 2017SensorsI understand why the black tank sensors get fouled but cannot understand how the shower and the kitchen sink tank sensors get fouled as soap is supposed to clean things so what is the cause?
Old-BiscuitExplorer IIIDec 04, 2017Soap scum residues, oils (body & cooking/foods), hair etc etcGrey can be nastier then black due to the 'debris/stuff' that goes in and accumulates.
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