Second Chance wrote:
Like you, I put about 4 gallons of fresh water in the black tank after emptying - but I've never used any additives. I've also not had any issues in over four years of full-timing. Several times a year I will use the "Geo method" to clean the tanks: about 1/3 tank of clean water with some dish detergent and borax crystals before hitting the road. The agitation and solution help clean off the level sensors and get residual "stuff" off the sides of the tank(s).
Rob
I adopted the Geo Method a number of years ago. After I dump the Black tank, I like to put in a 1/2 bottle of Calgon and a good bit of dish soap. I top it off with 3-4 gallons of water. The ride to my home cleanses the tank. I do he same with my Grey Tank. BTW: It never hurts to put some in your sink traps. No odors...
