did that... but...
I checked the tube - YUCK. I replaced the tube that runs from the sink faucet to the tank. The one that runs to the vanity I simply unhooked. I plan on taking that whole thing out sometime - I see no point for a vanity sink. Anyway, as I said, replaced the galley sink to tank tube - also I took the whole tank out and pressure washed inside and out... rehooked everything. So what now? Just fill it up and pump the sink faucet? By the way, I have no 'deck fill'.. I have to access the tank via the gear locker...