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Hi. Can anyone resolve an apparent paradox regarding bromine? I read here that bromine cannot be stabilised with CYA in the same way that chlorine can, so it's not advised for external pools with high UV flux. To me that implies that when bromide salt is converted to bromine, it is rapidly lost...

Hi I've spent some time researching the forum, but I can't find a definitive answer: is there currently a supplier of FAS-DPD test kits in the UK or Europe? For day-to-day testing, I use a Scuba+ from Tintometer (for FC, TC, CYA, pH etc). This seems to give pretty reliable results (though no...

One side wall of my pool is formed of natural stone and concrete (see picture attached, taken while empty). I don't lose water, so it must be pretty well-sealed and watertight. I'm considering switching from liquid chlorine to SWG. Should I worry about corrosion? I'm not worried about the...