Thursday, Apr 05, 2012 at 14:04
G'day Bill.
When I first got my thetford I used those chemicals and had the same problem with lots of black scale.
Like many of us here at EO, I now use, and have done so for a long time, the Homebrand Napisan. Very cheap and very effective, no nasty smells, chemical or otherwise. No need to put any in the top tank, although I add a tiny squirt of wash up detergent, which keeps the bowl and slide nice and clean.
To get rid of the scale, I would half fill the holding tank with a strong mix of napisan, and it will gradually flake off.
Mine did after a while. Helps if your on the move, as the sloshing speeds things up.
Once you have tried napisan, you will never go back, and your pocket will be better off as
well, as the homebrand stuff is very cheap.
Our member Motherhen has a good article on this on their website if you can get onto it. She may even respond to your post.
Cheers
AnswerID:
482372