RE: [A/S] Valterra adapter?

["Jim Whitworth" <whitsend@xxxxxxxxxx>]

<<Earl wrote "I usually drain the black tank first - the grey water than
flushes out the waste hose.  After a long trip I'll back flush both tanks.
Earl, Pinole, CA>>"

Question back at all you more experienced folks - I agree with the idea of
dumping the black tank first, then the gray tank, which serves to also clean
out the "stinky slinky". My question - isn't it also a good idea to then put
some amount of fresh water in both tanks, including packets of the
bio-chemicals?
Jim
Wimberley, TX