Dual Flush PRO
Buy here 39062 Dual Flush PRO http://www.amazon.com/dp/B000BUQOAE/r...

(Camco 39062)

Convenient way to clean the entire septic system
Forces water back up into plumbing lines to break up clogs in pipes
Allows to backfill and flush black and grey water tanks
Antisiphon valve and complete valve assembly included
Clear, break resistant polycarbonate adapters make it easy to see when the tank is done rinsing