Forum

We have a KZ Classic Sportsmen 190.  This does not have any black tank sensors. So, the only thing we can do is (with the water off) peer down inside with a flashlight to see depth and also if empty after draining.  I am at my wits end on emptying the tank.  If you look inside their are furrows in the bottom which seems to allow "particles" and sometimes larger portions of human waste, even after draining.  I have used a jet spray as well as gallons of water to try and rinse it clean. But, it just doesn't seem to want to drain totally.  We are going to check our leveling, just in case we are leaning a bit to the wrong side which "might" affect draining. But, aside from that we are frustrated as to why we cannot seem to get this tank totally, 100% emptied.  We have put in Calgon which is supposed to help with waste sticking (which it does) but justg doesn't seem to want to clean out the way I think it should.  Am I just not using enough water?  Is there  a reason for these furrows (indentations) at the bottom of the blank tank which seem to be hindering cleaning?  Am I doing something else wrong?  Hate to have an RV and just want to stop in to restaurants and such to go to the bathroom, but that is what it is coming to.  Kinda defeats the purpose of having an RV lol.  Thanks for any hints.