Review on Original Hydrotech Replacement Reverse Cartridges by Russell Roberson

Nothing to say except that these are original Hydrotech filters and they work perfectly!(+): price, price, price! You won't find a better price anywhere! These filters are almost 40% cheaper at Revain than local suppliers. (-): No. It is recommended to replace these filters about once a year. If you use drinking water constantly, maybe every 6 months or when water production and/or taste decreases. Highly recommended!