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501 filter media activated carbon insert. Absorbs ammonia from aquatic turtle, amphibian or aquarium fish waste. Improves water clarity and odor.
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Instructions: Remove plastic bag surrounding carbon and discard. Rinse carbon under tap water to remove carbon dust. (15-30 seconds). Place carbon bag above ceramic media of your Zoo Med 501 Canister Filter. Replace carbon bag monthly or more often if you notice water turning yellow. Made in Italy.