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Quote: Originally posted by D S B on 27/4/2010

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We occasionally get the same thing and we have used Thetford top tank fluid.  I think I'm going to use plain water for a time to see if it makes much difference.

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I cant remember what the tank cleaner was, sorry! It was bought specially for the job, and you had to run it through and  leave it a while, and then flush it all way, which was very satisfying (and a bit horrifying!) seeing all the black stuff coming away!

We changed to Elsan and had no problems, its often on special offer too. We have just bought the Onechem stuff to try.

Quote: Originally posted by michael on 27/4/2010

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Quote: Originally posted by D S B on 27/4/2010

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We occasionally get the same thing and we have used Thetford top tank fluid.  I think I'm going to use plain water for a time to see if it makes much difference.

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a word of warning on this,we once forgot the additives on one trip and like you thought it was ok to use just clean water.after a few days the toilet bowl started to discolour and i had to make a trip out to buy some bottles of fluid.

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Oh!  Well that's that idea down the pan (as it were!).  I think I'll finish up the thetford and then try a different make.

more info

http://www.thetford-europe.com/web/show/id=26111/langid=42

thanks for that.

Quote: Originally posted by michael on 27/4/2010

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Quote: Originally posted by D S B on 27/4/2010

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We occasionally get the same thing and we have used Thetford top tank fluid.  I think I'm going to use plain water for a time to see if it makes much difference.

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a word of warning on this,we once forgot the additives on one trip and like you thought it was ok to use just clean water.after a few days the toilet bowl started to discolour and i had to make a trip out to buy some bottles of fluid.

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Very interesting there Michael but what about the Thetford loos that connect directly into your water pump and draw the flush from the aqua roll?

they will have the same problem with the staining as no flush additive can be added.ours is only used for no.1s as we use the site toilets.a pre-spray can be bought from fenwicks.some motorhomes have the same problem.

I use the water system sterliser from my local dealer (the one for cleaning the aquaroll) He told me about it and it has worked a treat.

Quote: Originally posted by jonny100 on 22/7/2010

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Anniemacxx,

Any feedback on the "onechem" stuff. I also suffer from the black mould and currently use the Thetford Pink
Looking for a change and am due some refills to look after the top and bottom tank. A one bottle solution including the Fenwicks that has been suggested would be desirable

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  Hello Jonny

  We used the One Chem on our last trip and found it to be fine, no problems. Im not saying its better than any other brand, Im sure if the Fenwicks one is as good as their cleaners it will be great.  Elsan fluids are fine too, but I think thats two bottles again. We just liked the idea of one bottle for both jobs, as it were!

You will need to clean the tank as has been mentioned before to get rid of the black bits. We used the Thetford cleaner but it wasnt cheap and others on here have had good results with soda crystals. We found that just Milton for this wasnt enough.

Happy flushing!!