Package includes 3 Replacement Odor Reducing Pads for use with Exo Terra Turtle Filter FX-200. Consistent filtration of your aquatic turtle's water help keep your pet turtle healthy and happy. Plus, our odor reducing pad keeps you happy, giving you a clean, odor-free home. As part of the Exo Terra Turtle Filter FX-200, odor reducing pads absorb and trap phosphate, nitrite and nitrate without removing important trace elements. Make aqua-terrarium maintenance easy without sacrificing your turtle's crystal clear water.