I bought myself the MiniJet filter for Christmas. The instructions don't say anything about sanitizing, but I assume it should be sanitized before use. What's the best way to do it? Soak the filters in sanitizing solution before assembly, filter some solution through the filter after assembly, don't sanitize at all? Is the solution hard on the metal parts? If the filters are saturated in solution either way, does that over-sulphite my wine? Just need some guidance so I don't mess up (it's a MM All-Juice Shiraz that's been in the carboy for 3 months and is about ready to bottle). Thanks!