I am planning to replace the connections for my
built-in holding tank. They are currently 2
1.5" nylon hose fittings on the front face of
the tank - one at the top as an inlet, one at
the bottom as an outlet. Is it acceptable to
use just 1 top mounted fitting, with a tube
running to the bottom of the tank, for both
in/out? It would require a valve or 2, but it
seems to me that it would help keep things
stirred up, and make 1 less hole in the tank.

john