Originally Posted by bluegrass
Has anyone had experience with changing out the holding tanks on late model Classics? My 2007 34’ has a main that my wife considers disgusting as it appears the previous owners were less than fastidious. Your thoughts would be appreciated with respect to potential replacement costs...I’m not going there. Thanks.
Unless they are cracked and leaking there is no rational reason to replace those tanks.
Clean out any solid material by filling/soaking for a day or two/dumping/flushing. Then repeat and repeat .... till the tanks look clean. When you shine a flashlight into the toilet, looking into the black tank you should see gray/black plastic tank bottom. If there is anything built up and stuck in that spot you might have to break it up with a broom handle or a tank flushing wand.
Then sterilize/sanitize the tanks using chlorine bleach/water mix (a couple cups of bleach and fill the tank with water). Soak over night. After doing that the tanks will be as sanitary as a new tank.
GEO method for RV waste tanks is used for regular maintenance to keep the waste tanks sanitary and odor free.
A new toilet is a couple hundred $. That might make wife happy. She can't see the tanks.