mr rosco said:ok,thanks for the help and info..sorry,as yet cant manage a photo,bit of a technophobe and not quite got to grips with uploading things..as far as i know we in the uk only add small amounts of chlorine to our tap water but will try to find out for definate..am i safe to continue with the partial water changes as i thought this was the best way to lower ammonia levels or should i leave it for another week to helb the good bacteria along?