Re: Holding tank capacity
Steve, if you can make a 40 gallon black tank last for 3 weeks, then you have built up many layers of 'stuff' in there that you will eventually regret having put in there.
Flush water is the main thing that fills up your black tank, and you need plenty of it to allow 'stuff' to move to the drain outlet when you dump.
I would suggest that you find one way or another to really deep clean that tank.
Search the forum here, and you'll find MANY threads for how to clean out the tank. Just dumping it won't clean it out.
Geez, I hope we don't start repeating all of those black tank cleaning methods AGAIN! :clown: