Thetford cassette question

[Lindylooj]

We are back from our first weekend, survived and enjoyed. We will not be using the van again for 2-4 weeks, hubbie has emptied fresh and grey water + the thetford cassette. Question is should the cassette have a little water + the blue stuff in it or is it best to have it empy completely until we go out again. Advice please.

 

[Reallyretired]

ok, so that answers that bit of the question. what about dosage??

Using the Bio I just use one capful, seems to be enough.

 

[steles]

thanks, nearlyretired. will have to give it a try now.