The point of my idea was that both tanks could not be full at the same time. As the freshwater was consumed it would end up in either the black tank or the grey tank. (but never the Big Blue tank outside !)
As the fresh water level went down, the grey tank went up.
Ive actually decided that hiding from the Blue Card police is a simpler solution
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Thread: Combined Fresh/Grey water tank
01-03-12, 16:49 #11