--- product_id: 456957747 title: "FZONE Pro Dual Stage Aquarium CO2 Regulator W21.8 for Aquarium Plant Tanks" brand: "fzone" price: "€ 336.02" currency: EUR in_stock: true category: "Fzone" url: https://www.desertcart.hr/products/456957747-fzone-pro-dual-stage-aquarium-co2-regulator-w21-8-aquarium store_origin: HR region: Croatia --- # Integrated high-precision needle valve Adjustable output 0-65 PSI Dual stage pressure stability FZONE Pro Dual Stage Aquarium CO2 Regulator W21.8 for Aquarium Plant Tanks **Brand:** fzone **Price:** € 336.02 **Availability:** ✅ In Stock ## Summary > 💨 Master your aquarium’s CO2 flow with precision and peace of mind! ## Quick Answers - **What is this?** FZONE Pro Dual Stage Aquarium CO2 Regulator W21.8 for Aquarium Plant Tanks by fzone - **How much does it cost?** € 336.02 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/456957747-fzone-pro-dual-stage-aquarium-co2-regulator-w21-8-aquarium) ## Best For - fzone enthusiasts ## Why This Product - Trusted fzone brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual Aquarium Mastery:** Two independent manifold blocks let you control CO2 for one or two tanks effortlessly. - • **Built-In Safety Assurance:** Automatic pressure release valve activates above 100 PSI for worry-free operation. - • **Tailored Output Precision:** Adjust pressure from 0 to 65 PSI to perfectly match your aquarium’s unique needs. - • **Unshakable Pressure Control:** Dual stage design ensures consistent CO2 flow—no more surprise tank dumps. - • **Whisper-Quiet & Energy Smart:** 12V DC solenoid runs silently and safely, consuming less power than traditional models. ## Overview The FZONE Dual Stage CO2 Regulator is a professional-grade aquarium accessory featuring a dual stage construction for stable pressure output, adjustable pressure from 0-65 PSI, and dual independent manifold blocks for controlling CO2 in one or two tanks. Equipped with a quiet, energy-efficient 12V DC solenoid, a high-precision needle valve for fine bubble control, and a built-in safety valve, it ensures reliable, customizable, and safe CO2 delivery. Ideal for serious aquarists seeking precision and durability. ## Description FZONE Pro Dual Stage Aquarium CO2 Regulator W21.8 for Aquarium Plant Tanks | Expandable Manifold, Adjustable Pressure, DC Solenoid, Durable MetalBuild, Integrated Precision Needle Valve, Bubble Counter : desertcart.co.uk: Sports & Outdoors ## Features - Dual stage construction & adjustable output pressure. Dual stage construction provides stable output pressure regardless of how much CO2 gas remains inside the CO2 cylinder, eliminating unpredictable catastrophes such as an end-of-tank-dump (EoTD). The output pressure is adjustable from 0-65 PSI based on customers’ different needs. - Modular manifold block design. Power two tanks with independent control. Features two independent manifold blocks, each with its own high-precision needle valve. Control CO2 for a single aquarium or for two separate aquariums independently from one regulator—perfect for multi-tank owners. - Safety and precision in mind. Our regulator has a built-in safety valve. It will open automatically to release the pressure when it exceeds 100 PSI. The integrated needle valve is precise. The CO2 output can be adjusted to as low as 1 bubble every 3 seconds. - Solenoid runs on 12V DC instead of conventional 120V AC. This regulator adapts to 12V DC, which is more stable and consumes less power. The solenoid is safe to touch and is very quiet. - Attention. Suitable for W21.8 side opening tanks! Installation tools are included. Fzone will offer a one-year warranty, round-the-clock service, and you can reach out to us at any time for any product-related concerns. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B1VK47Z9 | | Best Sellers Rank | 125,579 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 39 in CO2 Systems | | Brand Name | FZONE | | Country Of Origin | China | | Customer Reviews | 4.3 4.3 out of 5 stars (31) | | Item Form | Regulator | | Item Highlight | Expandable Manifold, Adjustable Pressure, DC Solenoid, Durable MetalBuild, Integrated Precision Needle Valve, Bubble Counter | | Item Weight | 1.06 Kilograms | | Manufacturer | FZONE | | Pet Type | Fish | | Target Species | Fish | | UPC | 689323443819 | | Unit Count | 1.00 count | ## Product Details - **Brand:** FZONE - **Item form:** Regulator - **Item weight:** 1.06 Kilograms - **Manufacturer:** FZONE - **Unit count:** 1.00 count ## Images ![FZONE Pro Dual Stage Aquarium CO2 Regulator W21.8 for Aquarium Plant Tanks - Image 1](https://m.media-amazon.com/images/I/71SVo5jd-FL.jpg) ## Frequently Bought Together - FZONE Dual Stage CO2 Regulator Aquarium Adjustable Output Pressure Pro Series with DC Solenoid and Integrated High Precision Needle Valve and Bubble Counter (dual stage) - DONGKER Aquarium CO2 Proof Tubing, 5M/16Ft Aquarium Air Line Tubing with 4 Suction Cup for Fish Tank Aquarium - 2 Pack Drop Checker, Aquarium CO2 Tester Monitor Glass Drop Checker Aquarium CO2 Detector for Planted Fish Tank --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/456957747-fzone-pro-dual-stage-aquarium-co2-regulator-w21-8-aquarium](https://www.desertcart.hr/products/456957747-fzone-pro-dual-stage-aquarium-co2-regulator-w21-8-aquarium) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-10-11*