CO2 Absorbent Media, 2.2 lb Color-Changing Pellets for Reef Aquarium Scrubbers and Protein Skimmers

When your reef aquarium remains at a low pH even though alkalinity is on target, this CO2 absorbent media offers a practical way to reduce excess carbon dioxide entering the water through your skimmer.

Fill a compatible CO2 media reactor with the pellets, then connect its output to the protein skimmer's air intake. As the media reduces incoming CO2, less carbonic acid forms in the aquarium, supporting a more stable environment for corals.

Key Features

• The media changes from pink to white as it becomes exhausted, giving you a clear visual cue that it is time for fresh pellets.
• Properly sized pellets produce minimal dust while supporting effective CO2 absorption, making reactor filling and routine handling tidier.
• Reducing excess dissolved carbon dioxide can raise aquarium pH, offering useful support for reef keepers managing chronically low readings.
• Connection through a CO2 reactor and protein skimmer air intake fits naturally into the maintenance routine of an equipped reef system.
• Monitoring both the color change and aquarium pH provides two practical ways to judge replacement timing and maintain consistent care.

Specifications

• Net weight: 2.2 lb.
• The media is based on calcium hydroxide (Ca(OH)₂) and sodium hydroxide (NaOH).
• The media changes from pink to white when exhausted.
• Fill a CO2 media reactor with the absorbent media.
• Connect the reactor output to the protein skimmer intake.
• Replace the media when it turns white or when aquarium pH begins to drop.
• Exhausted media cannot be regenerated.
• A general replacement guideline is every 14 days, although frequency varies by aquarium and surrounding environment.

Keep extra media available so a fully exhausted batch can be replaced promptly, helping you preserve the stable reef conditions established through regular testing and maintenance.