Sorry but am I the only one that doesn't know what they are talking about???
My process is to :
1) Dump Black Water
2) My TT has a Whirly Bird built into the Black Water Tank so I run that for awhile. I also have the clear 45* discharge adapter with a hose adapter so I can watch until the water is clear.
3) Then I dump a 5 gallon pail of water down the stool and then connect the hose to the adapter listed above and turn it on until it is clear.
4) After it finishes and the drain stops I close the tank and dump another 5 gallons of water into the tank and add chemicals.
5) Dump the Grey Water tank
6) turn the hose back on the adapter to back flush the Grey water tank.
7) once it runs clear shut the water off, let the water drain out and close the tank.
FWIW I picked up a box of Nitrate Gloves at Harbor Freight and wear them through the process....