Apparently Fauna Marin is not hosting the FxM Calc dosing calculator anymore but the handy calculator is now available for download at the Euroreefers.eu forum. For those of you using the balling method,. teh FxM calculator was a great way to figure out exactly how much of each component you need for your system. It appears the main parts of the calculator have not changed and it just changed hosts. Also if you are using this calculator, there are also Android Apps for balling, balling light and salinity calculator for purchase (€2.99) and an Android water change app that is free. Thanks for the tip Thomas and Ramona.