Two Little Fishies CDX CO2 Absorption Media

If your reef tank consistently suffers from low pH, especially in closed-air buildings, CDX Media is the solution. Designed to adsorb excess carbon dioxide, CDX helps stabilize your system’s pH and improves overall coral health.

How It Works

1. Add CDX Media into your PhosBan Reactor.
2. Connect the reactor to your protein skimmer’s air intake using a CDX Adapter.
3. The protein skimmer then pulls CO₂-depleted air into the aquarium, reducing excess carbon dioxide levels and stabilizing pH.

Key Benefits

• Helps maintain stable pH in reef aquariums
• Reduces problems caused by high indoor CO₂ levels
• Easy integration with PhosBan Reactors and protein skimmers
• Visual exhaustion indicator: white → pink color change

Available Sizes

• 750 mL Jar – Lasts 6–8 weeks in an average 190–380 L (50–100 gal) reef aquarium
• Larger sizes available for bigger systems

When to Replace

CDX Media is fully exhausted when it changes from white to pink. Replace promptly to maintain proper CO₂ adsorption and pH stability.

Type

Filtration Media