The Rio Nitrate+Nitrite Pad is a universal filtration media that neutralizes nitrates and nitrites. This versatile pad uses natural aerobic bacteria to remove these toxins from your aquarium or pond, and can be cut to fit a variety of filtration systems to keep your water clean and healthy. Neutralizes nitrate & nitrite Utilizes natural aerobic bacteria Universal filter pad - just cut to fit For freshwater aquatic environments Use in virtually any type of aquatic filtering system, including: Hang On Back filters, Canister filters, Wet and Dry filters, Top filters, Internal filters and Pond filters.The Rio Nitrate+Nitrite Pad is a tightly woven chemical filter pad that utilizes beneficial enzyme bacteria and zeolite to absorb Nitrite (NO2) and Nitrate (NO3).Directions:1. Cut the Nitrate+Nitrite Pad slightly larger than required.2. Verify that the pad fits and trim if needed.3. Rinse in tap water to remove dust and place in filter.Replace every 4-6 weeks, or when required.Active Ingredients: Enzyme Bacteria and Zeolite
