This package includes the Lifegard Aquatics Pro-MAX 3" Body 25W Standard High Output UV Sterilizer & Replacement Lamp. You'll need a bulb in a year as bulbs should be replaced annually. Might as well get one with the UV.

The Lifegard Aquatics Pro-MAX 3" Body 25W Standard High Output UV Sterilizer features a patent-pending, flow-through design with less restrictive than usual angled inlet and outlet ports requiring less plumbing. This unique design enables easy installation of new or replacement systems as it can be positioned in multiple ways to fit tight spaces.

We also carry the replacement parts for this product. The Protective Sleeve should also be replaced every year for safe and maximum performance.You should also check the Gaskets every year and replace them if they're cracked.