For whatever reason, SaniCon has been using a 3" hose between the drain and the SaniCon unit that is semi permeable and allows sewer odors to permeate the hose and stink up the bay.
I've had two SaniCon units, one on my previous coach and one on my new coach. On both, I changed the hose to a heavy duty hose made by Rhino.
SaniCon uses large rubber bands on their hose ends to seal the hose to the SaniCon unit and to the discharge end. It can be quite a workout to reinstall those rubber bands and make them seal correctly. Without them, the hose ends will leak.
Sealing Tip....Often at RV shows, there will be a booth selling "Rescue Tape". It's a silicone tape that seals to itself when wrapped around a hose or other object. The "Rescue Tape" works great as a gasket for the SaniCon, versus using the rubber bands. It doesn't slip when you install the hose.
At the last RV show, the "Rescue Tape" sales person showed how the "Rescue Tape" can be used for a cut on your finger. Wrap it around and it seals to itself, giving you a water tight band aid. Another good use in an emergency.
Don & Mary
2014 Newmar Dutch Star - All Electric - 450 ISL
2016 GMC Canyon 4WD Crew Cab