Black tank dumping

The 3/4 full recommendation is to ensure you get enough pressure/movement as the tank empties to move the solids out.  If you are not that full at the end of the trip but want to dump, first fill up the black tank by holding the toilet flush valve.

Also make sure you dump the black tank first, then dump the gray tank.  That will flush out the hose.  You should never leave the black tank open if you have full hookups, but you can leave the gray tank open until just before you dump the black tank.  Close it to get 2-3 showers worth of water in it, then you can dump the black tank and then the gray tank.

We empty every time and rinse. Once in a while, I will but a bag or 2 of ice in the tank and a cup of soap for on the way home. The ice will slide around and scrape off any thing that may stick to to bottom on the tank like paper etc. Before anyone ask how you get the ice out?. it melts. I know we are all smart here but someone all ways ask me that.

Nah.  I also dump the black tank at the end of each trip, no matter how long, or short.  However, we do also have the rinse attachment that was factory installed.  I close the grey water gate, fill the black water tank and when it shows nearly full, I open the black water gate, and let it continue to "flush" until all runs clear.  Safe Travels.

We will gennerally wait until 3/4 to dump, even if it takes a couple outings. Never a problem with.. build up.

Unless I think it's the last camp of the year, then we make sure we are 3/4 before breaking camp.. just "top it off" with the flush handle, drive to dump station.. 

KDHfan is on track, I got the rhino 15 foot collapsable model, reasonably priced. I goggled the name on the end of my drain hose holder that used to be on the front of the pod under the battery. Called the people, they were very nice a larger tube that holds the rhino was like 18 bucks plus shipping. I moved the larger tube back, it fit between the old tube and the black water drain valve, works perfect. you can't see the holder, I have a longer stronger hose at a very reasonable price. no pun intended.