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Chihiros External CO₂ Diffuser

Keep your aquascape clutter-free with the Chihiros External CO₂ Diffuser.

Installs inline on 12/16, 16/22 or 19/25 mm filter hoses, atomising gas through a replaceable ceramic disk for maximum CO₂ dissolution and crystal-clear viewing inside the tank.

Minimum pressure 1.5 bar.

Size

Regular price $69.99 NZD
Tax included Shipping calculated at checkout.

Pickup available at Aquascape Shop

Usually ready in 24 hours


Authorised Chihiros Retailer

We are an authorised Chihiros retailer.

All Chihiros products sold by us are genuine and sourced through official distribution channels.

Purchasing from an authorised retailer ensures correct regional specifications, official manufacturer support, and access to after-sales assistance.

Warranty Information

Almost all Chihiros products are covered by a 1-year manufacturer warranty.

This warranty excludes parts subject to normal wear and tear, including power supplies, adapters, and other consumable components.

Delivery and Shipping

Standard Shipping: Orders are typically dispatched within 1 business day. Delivery times vary based on the destination.

  •  Urban Areas: 1-3 business days
  •  Rural Areas: 2-5 business days
  •  Courier Services Used: NZ Post and Aramex.

Free shipping is available for New Zealand customers with a minimum purchase of $150.00.

  •  Non-Rural Addresses Only: This offer applies only to non-rural addresses.
  •  Exclusions: Bulky items such as aquariums are excluded from the free shipping offer.

Description

Bring professional-grade gas diffusion to your planted aquarium without sacrificing the clean lines of your scape. The Chihiros External CO₂ Diffuser mounts inline on your canister filter’s return hose, hiding the hardware in your cabinet while delivering a micro-mist of CO₂ directly into the out-flow.

Key Features

  • Crystal-clear view, zero clutter – No more glass diffusers or bubble counters inside the tank; all you see is plants.
  • Engineered for efficiency – A precision-fired ceramic membrane atomises CO₂ into ultra-fine bubbles. The longer dwell time in the hose means more gas dissolves before reaching the display, reducing wastage.
  • Built to last – The anodised aluminium shell shrugs off high pressure and humidity, while the acrylic window lets you monitor bubble density at a glance.
  • Service-friendly – Twist off the front cap, swap the ceramic disk, and you’re back in action in minutes.
  • Fits your setup – Choose the size that matches your filter hose and flow rate. All models accept standard 4/6 mm CO₂ tubing via the included compression fitting.

Specifications

  • Material: Aluminium alloy, acrylic, sintered-ceramic membrane
  • Minimum working pressure: 0.15 MPa / 1.5 bar
  • Membrane diameter: 17 mm (M), 21 mm (L), 25 mm (XL)
  • Replaceable diffuser head: Yes (spares sold separately)
  • Includes: Inline diffuser body, membrane pre-installed, hose nuts, O-rings, user guide

Payment & Security

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