UNS Pro Inline CO2 Diffuser - Aluminum, High Gas Dissolution Diffuser for Freshwater Planted Aquarium - Aquascaping Tank External Canister Filter Accessory for 1/2in or 12ID Tubing - Space Gray, 12mm — Open-Box, 13% Off

Name: UNS Pro Inline CO2 Diffuser - Aluminum, High Gas Dissolution Diffuser for Freshwater Planted Aquarium - Aquascaping Tank External Canister Filter Accessory for 1/2in or 12ID Tubing - Space Gray, 12mm
Brand: Ultum Nature Systems
SKU: awhd-us-b0fl8yj98b
Price: 37.99 USD
Availability: InStock

Brand: Ultum Nature Systems

Condition: Used - Mint

$37⁹⁹

$43⁴⁷

-13% Save $5⁴⁸

Updated: 8 days ago

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Description

Keep Your Aquascape Clean – Installs outside the aquarium on your filter’s return line, removing the need for bulky in-tank diffusers

Aluminum Build in Space Gray – Corrosion-resistant and built to last, this sleek diffuser adds a professional touch to any planted tank setup

No Flow Restriction Design – Innovative side-mounted ceramic plate allows strong water flow and efficient CO₂ diffusion without clogging output

Available in 3 Sizes – Choose from 12mm, 16mm, or 20mm models to fit your canister filter setup, including UNS Delta and Blitz filters

Easy Maintenance & Replacement – Access the ceramic plate easily for routine cleaning or replacement without disconnecting your full system

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Product Details

SKU:: awhd-us-b0fl8yj98b
Model:: UNSID1201
Country:: US
ASIN:: B0FL8YJ98B
UPC:: 810004571143

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Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?

Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $5 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.

What's the difference between open-box and refurbished?

Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.

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Is it safe to buy refurbished?

Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.