Name: Chihiros External CO2 Diffuser
Brand: Chihiros
SKU: AC-6782241
Availability: InStock
Rating: 5 (1 reviews)

The Chihiros External CO₂ Diffuser is a premium inline CO₂ atomizer designed for efficient and uniform CO₂ diffusion in planted aquariums. Installed externally along your filter’s outflow tubing, it ensures a steady and fine mist of CO₂ bubbles that dissolve quickly into the water, promoting lush and healthy plant growth. Its sleek, transparent acrylic design keeps the aquarium interior clean and unobstructed. Available in M (12/16 mm) and L (16/22 mm) sizes, this diffuser is compatible with most external canister filters. Ideal for aquascapers who prefer minimal equipment inside the tank, the Chihiros External CO₂ Diffuser delivers excellent gas dissolution efficiency and quiet performance for a crystal-clear, professional aquascape. Inline CO₂ diffuser for external filter setup Ensures fine CO₂ mist for maximum plant absorption Available in two sizes – M (12/16 mm) and L (16/22 mm) Durable acrylic construction with ceramic diffusion plate Keeps aquarium interior clean and equipment-free Ideal for high-tech planted aquariums

Delivery in 2-5 Days

The Chihiros External CO₂ Diffuser is designed to deliver superior CO₂ dissolution and distribution directly through your aquarium’s external filter system. Unlike traditional in-tank diffusers, this external model keeps the tank interior clean while providing maximum gas absorption through its high-efficiency ceramic plate. This ensures consistent CO₂ levels, faster plant growth, and a pristine aquascape appearance.

Crafted from durable acrylic, this diffuser is lightweight, transparent, and easy to install. It connects seamlessly to your canister filter outlet tubing and works silently to produce ultra-fine CO₂ bubbles that dissolve efficiently. Perfect for aquascapers seeking both aesthetics and performance, it’s an excellent addition to high-tech planted tanks.

Specifications

Material	High-quality transparent acrylic
Diffusion Plate	High-efficiency ceramic
Installation Type	Inline (external CO₂ diffusion)
Compatible Filter Hose	M: 12/16 mm \| L: 16/22 mm
Usage	For CO₂ injection in planted aquariums
Brand	Chihiros Aquatic Studio
Country of Origin	China

Available Variants

Variant	Tube Size	Recommended Tank Size
M	12/16 mm	For small to medium aquariums (up to 90 cm)
L	16/22 mm	For large aquariums (above 90 cm)

How to Install

Turn off your filter and disconnect the outflow hose.
Insert the Chihiros External CO₂ Diffuser between the hose sections.
Secure the connections tightly to prevent leaks.
Connect your CO₂ tubing to the diffuser’s inlet.
Restart your filter and adjust CO₂ flow as required.

Care & Maintenance Tips

Clean the ceramic plate regularly with bleach or CO₂ diffuser cleaner.
Rinse thoroughly before reinstalling.
Check hose connections periodically to prevent leaks.
Ensure CO₂ pressure is appropriate for fine bubble output.
Handle the acrylic body carefully to avoid cracking.

Shipping

Delivery in 2-5 Days. Express delivery is available at checkout for an additional fee.

Returns

We accept returns within 3 days of delivery. Items must be unused and in their original packaging.

Chihiros offers wrgb aquarium lights & aquascaping equipment, with a product selection suited to aquarists who want practical solutions for their tanks and aquatic displays. The range covers wRGB II, WRGB Slim, lighting controllers, dosing systems, CO2 accessories and aquascaping tools. These products address common aquarium setup, maintenance and improvement needs, from choosing the right equipment or supplies to building a more consistent care routine.

For aquarium hobbyists, selecting compatible products is essential. Chihiros items can be considered when planning adjustable planted tank illumination and precision aquascaping. The ideal choice depends on your aquarium size, livestock, planted layout and existing equipment. Always check model specifications, dimensions and manufacturer directions before installation, dosing or use.

Whether you are starting a new setup or upgrading an established aquarium, the Chihiros collection gives you options to compare according to your needs. These solutions are especially relevant to nature aquariums and high-tech planted tanks. Explore Chihiros products at Aqua Club India and shop aquarium equipment, supplies and accessories online with product information to help you select suitable items.