Yea i took the filter out to treat her but it had been going for 3 days before treatment so I dont thing it will be a chemical in the water
I took a sample in to the petshop and they said there was nothing wrong with the water - pH6.8, no amminia, nitrites, nitrates and everything else was fine too
Oh well I guess theres not much else I can do
I was just wondering if anyone else has had this happen and if they knew what it was or how to prevent it
Thanks for the help