Wet Packed - Chemi-Pure is packaged wet (or more accurately, moist) for several key reasons related to its effectiveness and shelf stability. Pre-Activated Media - Chemi-Pure contains activated carbon and ion exchange resins that are most effective when moist. Wet packaging ensures the carbon remains activated and ready to use immediately—no rinsing or soaking is needed. Pre-Activated Media - Chemi-Pure contains activated carbon and ion exchange resins that are most effective when moist. Wet packaging ensures the carbon remains activated and ready to use immediately—no rinsing or soaking is needed. Pre-Activated Media - Chemi-Pure contains activated carbon and ion exchange resins that are most effective when moist. Wet packaging ensures the carbon remains activated and ready to use immediately—no rinsing or soaking is needed. Ready-to-Use Convenience - Because it’s wet-packed: Chemi-Pure can be dropped directly into your filter or sump - no prep needed. Ideal for hobbyists who want an efficient, plug-and-play solution for water clarity and chemical balance.