Originally Posted by Cosmik Debris
If the inlet side of the pump is Tee'd into both fresh tanks, as soon as one side drops below the end of its hose, air enters the system and no water would be pulled from the other tank. In a perfect world, the ends of both hoses would be at the same level, and your RV would also be perfectly level.
I think I'd rather have one pump input hose and two tanks plumbed together at their lowest point.
Yes, very good point. I know that when I've run the FW tank down to the point where I can get no more water through the pump, I can go out and open the FW tank drains and still get probably a couple of buckets of water out. I never thought about what you said, but I see the logic in it.