Guy must be using flood water to clean wfp.
NO I use just tap water nothing added what makes it 100% pure water ? 
you ve been taking tips from gary999 havent you? 
Oih! nothing wrong with tap water depending on your tds,mine
is below thirty at mo nice soft water that comes from wales,i guarantee
never a spot left with it.
I also collect rain water matey ive had it as low as 2ppm before now
with luck i will get another good refill tomorrow,cleaned my hard sheet
of plastic last night with antcipation
