1. How bad is TIN 13 µg/l ? 2. Has anyone used media, such as Cuprasorb, to eliminate the TIN instead of WC? 3. If I did do 15% WC x 6, should I still do the corrective dosing on all other elements? Or should I wait to do another Triton Test and go from there. I'm thinking by doing WC I will be replenishing these elements, therefore I might be overdosing.