Chihiros External CO2 Diffuser Large 16/22mm

Upgrade your planted-tank CO2 delivery with the Chihiros External CO2 Diffuser. Engineered with aluminium, acrylic and a fired ceramic head for reliable, high-quality diffusion. Ideal for external setups where durability, serviceability and discreet installation matter. 

Key features:

• Construction: robust aluminium body, clear acrylic chamber and high‑porosity ceramic diffuser head for long-lasting performance.
• Replaceable diffuser head: swap the ceramic disc quickly for easy maintenance and restored performance without replacing the whole unit.
• Minimum working pressure: 0.15 MPa (≈ 21.8 psi) — the fired ceramic head requires higher pressure than many built‑in diffusers to generate ultra‑fine bubbles.
• Three size options for hose compatibility:
  • M — fits 12/16 mm hose
  • L — fits 16/22 mm hose
  • XL — fits 19/25 mm hose
• Clear acrylic chamber allows visual monitoring of bubbles and internal condition.
• Low‑profile aluminium finish for corrosion resistance and neat external installation.
• Optimized for external CO2 routing: keeps tank interior tidy and simplifies service access.
• Easy to install: attaches to standard tubing; check regulator output to meet minimum pressure requirement.