The SKIM AEROX by Modern Reef is a high-purity CO₂ Scrubber absorbent material, specially designed for use in the air intake of the protein skimmer. It removes carbon dioxide (CO₂) from the air before it enters the skimmer, helping to maintain a higher and more stable pH in the aquarium.

• Increases and stabilizes the aquarium's pH.
• Reduces pH fluctuations between day and night.
• Supports the growth, coloration, and calcification of SPS, LPS, and soft corals.
• May help reduce issues such as cyanobacteria and unwanted algae through better pH stability.
• The spherical granules change color from white to purple/violet when the material is exhausted, so you know when it needs replacement.