Originally Posted by Mystery
Nothing will get pumped dry if the is a closed tube attachment between the tanks. In fact it would be the simplest system that would work.
right, you need a large diameter tube between the two tanks.
but then you wouldn't need two filters.
OK, I found an old vaccuum cleaner, I am going to use the hose and see if I can keep the levels.
Finally found my camera. The reason I want to connect the tanks, would be so that I can move the filters to the 20 gal
and open the front of the 55 up.