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Wyin Aqua External Inline CO₂ Diffuser

Inline CO2 diffuser that sits on your filter hose, in 12/16, 16/22 and 20/25 mm sizes.

Regular price $59.99
Tax included Shipping calculated at checkout.
Size

Usually arrives in 2–5 business days

Delivery details

  • Dispatched within 1 business day
  • Proudly Kiwi since 2017
  • Expert advice

Ships to New Zealand

  • Free shipping on orders over $150. Not included: rural addresses and bulky items such as aquariums.
  • Under $150, courier is $6.80 to $9.90 depending on region, or $11.50 to $14.90 for rural addresses. The exact cost shows at checkout.
  • Rural and South Island addresses can take a little longer.
  • Damaged or faulty on arrival? Tell us within 7 days for a replacement or refund.

Full delivery details

Pickup available at Aquascape Shop

Usually ready in 24 hours

Description

This Inline CO₂ Diffuser from Wyin Aqua efficiently injects CO₂ into the aquarium water by breaking it down into extremely fine bubbles. Smaller bubbles increase the surface area and greatly improve CO₂ absorption, providing your aquarium plants with the ideal conditions for strong, vibrant growth.

Constructed from durable aluminium with a Gun Metal Gray finish, this inline diffuser is robust, resistant to corrosion, and blends seamlessly with modern aquarium setups. Its inline design connects directly to your external canister filter hose, keeping the aquarium interior tidy and equipment-free. Additionally, the clear acrylic viewing chamber makes it easy to visually monitor diffusion and ensure optimal performance.

The ceramic diffusion stone inside is replaceable, meaning easy and cost-effective maintenance over the diffuser’s lifespan. Replacement ensures consistent CO₂ dissolution and sustained effectiveness over time.

Benefits:
  • Enhances CO₂ absorption for healthy, lush aquatic plants
  • Provides consistent, even distribution of CO₂ throughout the aquarium
  • Inline installation reduces clutter and maintains a clean appearance inside the tank
  • Replaceable ceramic diffusion stone simplifies maintenance
Function and Usage:

This diffuser is designed for use with standard CO₂ tubing (4/6mm) and connects easily to external filter hoses of 12/16mm, 16/22mm 20/25mm diameters. Installation outside the aquarium ensures the effective diffusion of CO₂ before it enters the aquarium, enhancing the overall health of your aquatic environment.

Key Features:
  • Inline installation for a neat, discreet setup
  • Replaceable ceramic diffusion stone
  • Durable aluminium construction with Gun Metal Gray finish
  • Clear acrylic chamber for easy monitoring
  • Easy push-fit connection to standard CO₂ tubing
  • Available in three sizes (12/16mm, 16/22mm and 20/25mm)
  • 5 stars: 1 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
L
Louie (New Zealand)
Great little diffuser

Works really well with my canister filter and keeps the tank looking clean. Easy to install and good quality. Very happy with it.