One more comment. I normally do not back flush 5 or 6 times. It's usually only once or twice, there again, depending upon how much water is in the grey tank.
Since I had a full grey tank this time, and we were preparing for a trip, I took the time to demonstrate what happens with each backflush and how long it takes to get somewhat clear water flushing out.
Here again, the proof is in the pudding. A single dump does not clean out everything. As demonstrated by the photos, (and by the many, many comments here), there is residue that is left behind after that initial dump. I think that is ALL I was attempting to demonstrate and how much flushing does it take to get it run clear too? (and as demonstrated, it takes a lot of water, no matter how the water gets in the tank.)
To each his own, and once again, there are no right or wrongs when it comes to camping. All we can do is share information and if someone wants to incorporate a new idea they've never thought of before, or tried before, then everyone gains. And not every idea works for everyone either. I'm just information sharing here.
