Drop-ins or liquid?
Hi all! This weekend when draining the black tank, it was very slow. I've been wondering if the outer casing on the drop-ins isn't dissolving and clogging the drain pipes. I went ahead and bought the ...
Forum Discussion
jplante4 wrote:
Find The Fit RV on YouTube. He did extensive testing of various black tank cleaning methods. As Dick_B said the ice cube method didn't fare well.
As noted previously, that was hardly a valid "test" of anything. To start with, even with his 'driving like a maniac for an hour' a downsized pickup (read 'car with no rear body') rides a BUNCH differently than my m/h does, and it certainly take a LOT more than one bag of ice and an hours drive to accomplish much.
People I know and myself have had good results doing it, but as stated, done wrong nearly anything will fail.
The method we've had success with was;
1) Fill the tank nearly full with clean water and let it stand several days, more is better.
2) Drain tank and flush, preferably with a strong stream form a garden hose from above.
3) Before the tank and its contents have a chance to dry out again add (depending on tank size) enough ice to cover the tank bottom, 4 bags minimum, and just enough water for the ice to slide easily, with no water it quickly sticks in place and doesn't move till there's enough melted to do this. Notice in the above video, no water, just ice? Mo water with the ice, no motion, no motion, no cleaning action.
4) Go for a LONG drive, I start with step 2 on the morning I'm leaving on a trip, it gets a solid 8 to 10 hours of motion.
5) Top up the tank with a little more water when you arrive.
6) Done!
