Quote:
Originally Posted by DickiedooFlagman
Our shower backs up when the bathroom grey tank is full. We've never filled the kitchen grey tank full...
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There is only one grey water tank, shared by both sinks & the shower. When it's full, it will normally back-up into the shower, because that's the lowest point.
If people have water backing-up into the sinks, but not the shower, it's due to something other than the tank being full.