Below are the Filters, Filter Wrenches and Ultraviolet bulbs for the craft brew 2000, 4000, 5500, 7000, and 10,000 GPD Reverse Osmosis Systems. Each system has one sediment filter, UV bulb and Crystal. Please click on the item you need below to order, and item instructions. The UV Bulb should be changed once a year. We recommend changing the filter every three months. Please if you have any questions, call us anytime at 805-777-7037.