New Pro-Elite Series V2 Complete Aquarium CO2 System with New Inline CO2 Diffuser
The Pro-Elite Series V2 regulator with an inline diffuser for the filter hose, a drop checker and tubing — the highest-quality CO2 system for an aquarium with an external filter, with a 10-year warranty.
What's in the kit
Choose what fits your cylinder and your aquarium.
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Pro-Elite V2 regulator€275.99Connection
CGA320 for North and Latin America; BS341/DIN477/W21.8x14 for the rest of the world.
Sold out in this size.
Added as its parts, one line each, so the cart shows exactly what ships.
New Pro-Elite Series V2 Complete Aquarium CO2 System with New Inline CO2 Diffuser
Prefer to choose part by part? Build your CO2 system — seven questions, priced as the sum of the parts.
Same-day dispatch on orders before 2 PM CET
Lifetime free technical support
Up to 10-year warranty
Free delivery on orders over €200
Real photos and videos from real customers
Tap a photo to see the gear in it — every tile is the customer's own post, credited and linked.
@mattmonkey23
🇷🇪 Il est temps de lancer ce magnifique 60P de chez @ona_mauritius , fièrement sponsorisé par @co2art . 🙌
Un immense merci à eux pour leur confiance. Je suis très fier de faire partie de la famille des COArt Artists ! 💚
Ça faisait un moment que je n’avais pas réalisé d’iwagu...🇷🇪 Il est temps de lancer ce magnifique 60P de chez @ona_mauritius , fièrement sponsorisé par @co2art . 🙌
Un immense merci à eux pour leur confiance. Je suis très fier de faire partie de la famille des COArt Artists ! 💚
Ça faisait un moment que je n’avais pas réalisé d’iwagumi… Du coup, j’hésite : partir sur un iwagumi pur et traditionnel ou tenter une version revisitée ? 🤭
J’ai déjà quelques Manten Stone à la maison qui iraient parfaitement dans ce bac, pour les connaisseurs. 🤩
Et vous, vous partiriez sur quelle option ? 💚🌱
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💧Filtration: oasefrance
🌱Plante: aquabon_reunion
🫧CO2: co2art
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#Aquascaping #PlantedTank #NatureAquarium #AquariumLife #iledelareunion
11 June 2026
In this photo
Delivery, support, warranty and how to reach us — the short version. Every link opens the full page.
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Shipping
Free delivery on orders over €200. Orders placed before 2 PM CET usually ship the same day; regulators are assembled and tested first. Fully tracked FedEx delivery: 1–2 business days in Europe, 3–5 worldwide. Delivery details
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Support
Lifetime free technical support on every CO2Art product. Guides, manuals and a ticket form live in the support portal.
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FAQ
Cylinders and connections, bubble rates, drop checkers, what a dual-stage regulator does — the questions we hear most, answered. Read the FAQ
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Contact
Monday to Friday, 9:00–16:00 CET. We reply within one working day. Contact us
The highest-quality CO2 system on the aquarium market: our best-rated dual-stage regulator, the Pro-Elite Series V2, with the latest inline diffuser and the accessories that go with it — for an aquarium with an external canister filter.
For peace of mind, this regulator gives the best pressure stability and an unbeatable 10-year warranty. With the extendable manifold blocks you can add outlets and run several diffusers from one regulator.
The dual-stage construction keeps the output pressure steady as the pressure in the cylinder drops and prevents an end-of-cylinder dump, so your livestock stays safe and the CO2 level constant.
What is in the kit
- Pro-Elite Series V2 dual-stage CO2 regulator with an integrated solenoid
- Aluminium bubble counter
- Inline CO2 diffuser
- CO2 drop checker set
- CO2-resistant tubing
The regulator comes with a CGA320 thread for North America or W21.8x14 (BS341 / DIN477) for Europe and the rest of the world — you choose it on this page. Not sure which? Our guide to cylinder connections in the help centre explains the two.
For an aquarium without an external filter there is the same kit with the in-tank Flux_ diffuser.
Shipping and delivery
Free delivery on orders over €200; otherwise €9.99 in Europe and €14.99 for the rest of the world. Orders placed before 2 PM CET are usually processed the same day — a regulator may need a little longer, because every one is assembled and tested before it ships. Delivery is fully tracked with FedEx: 1–2 business days in Europe, 3–5 worldwide. Customs or import duties outside the EU are charged on arrival. Shipping policy · Returns
Warranty and lifetime support
The Advance Professional and Professional dual-stage regulators carry a warranty of up to 10 years; every other CO2Art product carries the standard 2-year manufacturer's warranty. All customers receive lifetime free online technical support. Warranty terms
Satisfaction guarantee
If you are not satisfied with the quality of a product within 30 days of purchase, we send a full refund or a replacement at no charge. Mechanical defects found during the first year are repaired, with any parts needed, at no cost to you. The guarantee