Toilet flush problem

SOG bog and you don't need any chemicals.

Just do  not pitch down wind of any one who has one

Thanks everyone,yes I’ve been using pink flush, but no more. I clean the tank out and just use water, from now on.

Thanks again.

Brian

Thetford suggest some bleach in the flush tank will remove the black bits.  We have used Puriclean as we use in the water system, that works too.

We never use pink, but do occasionally get a few black bits, generally on the first trip of the year, soon  clears away.

For the  holding tank we use green tabs or Lidl Formil bio washing pods, rather than the Elsan blue sachets we used to use.  

Light to carry and easy to use.  Gave up liquids about 15 years back.

I have been using the pink stuff for years and continue to do so. Over time the holding tank does get a build up of the stuff that causes the black bits. The simple solution to this is to use Thetford tank cleaner. I put a goodly dose of the tank cleaner into the header tank and then fill with warm/hot water. Leave in place for 24 hours  and then flush into the cassette. A second filling of the flushing tank with warm/hot water and flushing that through I find solves the problem for at lease the coming season.

David

Thetford sell the pink flush liquid which causes the algae and then sell tank cleaner to remove it. Forgive my cynicism but I think they’re on a winner there🤣🤣🤣

I can't see a problem even if you do get some black bits in the flush .... it'll end up in a holding tank with poo!

Not something that keeps me awake at night either.

I always thought the Thetford tank cleaning stuff was intended for cleaning the holding tank?

I think we have some of it somewhere, need to read what the label says. 

When we had a caravan we occasionally got these black bits, usually worst when it had been in storage over winter etc..  We now have a motorhome, the toilet flush has no separate tank, it all comes from the under floor tank same as the taps.. After lack of use, over winter etc, we still get black bits initially in the toilet flush. I believe it just forms in the toilet pump and associated pipework which remains damp when not in use. After a few days it goes on its own.