Hi I am new to this and I have cleaned a house today and there has been some spotting on the glass I had a look in my tank and noticed something like dust floating on top has anyone else had this problem and would this be the cause ? Wondering how to get it out of the tank if it is the problem and this is a new tank also has a strainer fitted . I use spotless water for my water so I no my tds is good These windows wasn’t that dirty as they had been done by wfp before. I did rinse the glass off a lot and have my flow on 60 on 1 pain of glass the water looked a bit milky for a bit any ideas and would It help if I use vision in my water ? would be great to know so I can resolve this for the future thanks