--- product_id: 543084856 title: "FZONE 4L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit with | Stable, safe and reliable CO₂ output, complete kit, regulator, CO₂ diffuser, CO₂ tube, needle valve and solenoid" brand: "fzone" price: "S$474" currency: SGD in_stock: true reviews_count: 5 category: "Fzone" url: https://www.desertcart.sg/products/543084856-fzone-4l-aquarium-co2-generator-system-carbon-dioxide-reactor-kit store_origin: SG region: Singapore --- # 12V DC solenoid timer for customizable CO2 injection Precision needle valve with bubble counter, 1 bps control 1.5mm SUS304 steel, 25% thicker for max 1137 PSI FZONE 4L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit with | Stable, safe and reliable CO₂ output, complete kit, regulator, CO₂ diffuser, CO₂ tube, needle valve and solenoid **Brand:** fzone **Price:** S$474 **Availability:** ✅ In Stock ## Summary > 🌿 Elevate your aquarium game with precision CO2 control — because your plants deserve the best! ## Quick Answers - **What is this?** FZONE 4L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit with | Stable, safe and reliable CO₂ output, complete kit, regulator, CO₂ diffuser, CO₂ tube, needle valve and solenoid by fzone - **How much does it cost?** S$474 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/543084856-fzone-4l-aquarium-co2-generator-system-carbon-dioxide-reactor-kit) ## 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 - • **Pinpoint CO2 Control:** High-precision needle valve with integrated bubble counter lets you dial in a steady 1 bubble per second for optimal aquatic plant growth. - • **Eco & Wallet Friendly:** Say goodbye to costly disposable CO2 canisters; this refillable system cuts costs and environmental impact with just $3 refills lasting 3+ months. - • **Smart Timed Injection:** 12V DC solenoid valve on a timer lets you schedule CO2 release, maximizing efficiency and reducing waste. - • **DIY-Friendly Complete Kit:** Everything you need in one sleek 4L system—easy assembly in under 30 minutes, perfect for millennial aquarists who value hands-on control. - • **Industrial-Grade Durability:** Robust SUS304 stainless steel bottle withstands pressures up to 80kg/cm², ensuring safety and longevity. ## Overview The FZONE 4L Aquarium CO2 Generator System is a professional-grade DIY kit featuring a thick SUS304 stainless steel bottle capable of handling pressures up to 1137 PSI. It includes a precision needle valve with a bubble counter for fine-tuned CO2 delivery at 1 bubble per second, and a 12V DC solenoid valve with timer for scheduled injections. Designed for easy assembly and long-term cost savings, this system offers millennial aquarists a reliable, eco-friendly alternative to disposable CO2 canisters, enhancing aquatic plant growth with consistent, safe CO2 supply. ## Description FZONE CO2 Generator System for Aquarium 5.5 Litres Review: FZone Impareggiabili, il cliente al primo posto - Devo dire che all' inizio ero un po scettico sulla scelta di questo KIT fai da te, mi sono dovuto ricredere molto in fretta. Per cominciare il prezzo, rispetto ai classici impianti di CO2 costa molto meno, ti togli il problema delle bombole usa e getta che hanno un costo non indifferente senza contare che poi hai il problema dello smaltimento e per ultimo con una ricarica da 3€ ci faccio 3 mesi almeno. Intanto l' assemblaggio e la messa in opera una cosa facilissima, fai tutto in una mezzoretta ed è pronto all' uso, materiali veramente ottimi di prim'ordine, è 2 mesi che è in funzione e ho ancora più di mezza bombola disponibile. Però un problemino si è verificato, la valvola a spillo non si riusciva a calibrare, saltava da 15 a 30 bolle al minuto e non riuscivo veramente a calibrarla sulle 20 al minuto come io volevo, ho un acquarietto piccolo da 25 Litri. Decido di contattare direttamente FZone Europa lasciando fuori desertcart ma dialogando direttamente con loro. Impressionato dalla efficienza e attenzione ricevuta, mai successo di avere da una azienda una assistenza così attenta e personale, intanto le 3-4 mail scambiate ho interloquito sempre con la stessa persona ( Cheryl che ringrazio ancora per le attenzioni avute per il mio problema ) poi il tutto in lingua Italiana corrente ( senza traduttore Google ) invio un piccolo video per evidenziare il problema della valvola a spillo. Risultato? dopo 3 giorni avevo a casa non la valvola a spillo ma tutto il blocco del riduttore di pressione. Allibito e senza parole, non ci credevo, ora funziona tutto alla perfezione con le mie 20 bolle al minuto. Grazie FZone, il prossimo acquario che metterò su come cliente non mi perderete di sicuro. Io lo consiglio vivamente questo Kit per chi naturalmente non ha acquari esagerati. Prezzo conveniente, assistenza superlativa, costi di gestione molto contenuti senza sprechi. Review: Good product!!! - This kit has been an excellent addition to my aquarium setup. The setup process was easy, and the build quality is solid and durable. The regulator works smoothly, offering precise control over CO₂ output. The system maintains stable pressure consistently, which has helped improve overall aquatic plant growth. Overall, this is a great value for beginners looking for an efficient CO₂ system. ## Features - Professional DIY kit. A complete system in the size of a 4 litre bottle, including SUS304 stainless steel bottle, regulator, precision needle valve and easily adjustable bubble counter - Safe. The bottle body is made of 1.5mm thick SUS304 stainless steel (25% thicker than normal 1.2mm bottle). Can support pressure up to 80kg/cm2 (or 1137 PSI). The safety valve will open automatically when the internal pressure exceeds the safety threshold - Needle valve with bubble counter. High precision, aquarium specific needle valve provides accurate and fine adjustment. You can get 1 bps constant. Bubble counter with built-in control valve. Prevents water from flowing back into your CO2 tank (protects your CO2 tanks from rust and corrosion) - 12V DC instead of AC power supply. By having the solenoid on a timer, you can specify when you want to activate the CO2 injection and for how long - Please note: Dust required to generate CO2 gas are not included! You will need citric acid powder and baking soda ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08THYYFMN | | Best Sellers Rank | #79,610 in Pet Supplies ( See Top 100 in Pet Supplies ) #431 in Aquarium Water Quality Testing & Treatment | | Brand | FZONE | | Brand Name | FZONE | | Customer Reviews | 4.4 out of 5 stars 985 Reviews | | Item Form | Liquid | | Item Weight | 3.24 Kilograms | | Item form | Liquid | | Item weight | 3.24 Kilograms | | Liquid Volume | 5.5 Liters | | Liquid volume | 5.5 Liters | | Manufacturer | FZONE | | Manufacturer Part Number | FZ-4LKIT-US | | Model Number | FZ-4LKIT-US | | Number of Items | 1 | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Fish and Plants | | UPC | 764595876395 | | Unit Count | 1 Count | | Unit count | 1 Count | ## Product Details - **Brand:** FZONE - **Item form:** Liquid - **Liquid volume:** 5.5 Liters - **Manufacturer:** FZONE - **UPC:** 764595876395 ## Images ![FZONE 4L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit with | Stable, safe and reliable CO₂ output, complete kit, regulator, CO₂ diffuser, CO₂ tube, needle valve and solenoid - Image 1](https://m.media-amazon.com/images/I/61WHFAHGpsL.jpg) ## Questions & Answers **Q: What is the reason for needing a solenoid? How will the system run without one?** A: The solenoid will control the co2 output. When turn off the solenoid, there will not be co2 out from the generator. If without the solenoid, the co2 will keep output. **Q: How long do I have to wait before using the set up in my tank?** A: You can use it as soon as the needle is in the green. **Q: How can i replace the needle valve. Mine is broken alternating between full throttle or 0?** A: This isn’t a replacement part for the co2 generator it’s valve for a co2 tank. I recommend contacting the manufacturer. **Q: For a 4l co2 generator, should i put in 600-800 gram each of material a&b? also do i pour in 300ml water or more? i've read different opinions online.** A: I use 600 ml for the material each and 800 ml of water I freeze the water in try"s that make long round ice cubes the cube are made to put in water bottles ## Customer Reviews ### ⭐⭐⭐⭐⭐ FZone Impareggiabili, il cliente al primo posto *by E***O on 27 July 2026* Devo dire che all' inizio ero un po scettico sulla scelta di questo KIT fai da te, mi sono dovuto ricredere molto in fretta. Per cominciare il prezzo, rispetto ai classici impianti di CO2 costa molto meno, ti togli il problema delle bombole usa e getta che hanno un costo non indifferente senza contare che poi hai il problema dello smaltimento e per ultimo con una ricarica da 3€ ci faccio 3 mesi almeno. Intanto l' assemblaggio e la messa in opera una cosa facilissima, fai tutto in una mezzoretta ed è pronto all' uso, materiali veramente ottimi di prim'ordine, è 2 mesi che è in funzione e ho ancora più di mezza bombola disponibile. Però un problemino si è verificato, la valvola a spillo non si riusciva a calibrare, saltava da 15 a 30 bolle al minuto e non riuscivo veramente a calibrarla sulle 20 al minuto come io volevo, ho un acquarietto piccolo da 25 Litri. Decido di contattare direttamente FZone Europa lasciando fuori Amazon ma dialogando direttamente con loro. Impressionato dalla efficienza e attenzione ricevuta, mai successo di avere da una azienda una assistenza così attenta e personale, intanto le 3-4 mail scambiate ho interloquito sempre con la stessa persona ( Cheryl che ringrazio ancora per le attenzioni avute per il mio problema ) poi il tutto in lingua Italiana corrente ( senza traduttore Google ) invio un piccolo video per evidenziare il problema della valvola a spillo. Risultato? dopo 3 giorni avevo a casa non la valvola a spillo ma tutto il blocco del riduttore di pressione. Allibito e senza parole, non ci credevo, ora funziona tutto alla perfezione con le mie 20 bolle al minuto. Grazie FZone, il prossimo acquario che metterò su come cliente non mi perderete di sicuro. Io lo consiglio vivamente questo Kit per chi naturalmente non ha acquari esagerati. Prezzo conveniente, assistenza superlativa, costi di gestione molto contenuti senza sprechi. ### ⭐⭐⭐⭐⭐ Good product!!! *by L***G on 26 May 2026* This kit has been an excellent addition to my aquarium setup. The setup process was easy, and the build quality is solid and durable. The regulator works smoothly, offering precise control over CO₂ output. The system maintains stable pressure consistently, which has helped improve overall aquatic plant growth. Overall, this is a great value for beginners looking for an efficient CO₂ system. ### ⭐⭐⭐⭐⭐ Long term review *by S***E on 5 May 2026* I’ve been using this DIY CO₂ cylinder on my 50 gallon tank for about a year now, and it’s been consistently reliable. Setup was straightforward, and even if you’re new to planted tanks, it doesn’t feel overwhelming. The design is simple and intuitive, which makes day to day use pretty hassle free. One of the biggest advantages is how easy it is to refill. You don’t need any complicated tools or special skills, just a quick recharge and you’re good to go again. That makes it much more convenient compared to some pressurized systems. In terms of performance, it does exactly what you need. CO₂ output is steady enough to support healthy plant growth, and I haven’t faced any major issues over long term use. For beginners especially, this is a great starting point before moving on to more advanced setups. Overall, it’s a practical, easy to use solution that delivers solid results without overcomplicating things. ## Frequently Bought Together - FZONE 4 L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit with Regulator and Needle Valve for 600-800g Raw Material - Milliard Citric Acid 5 Pound - 100% Pure Food Grade Non-GMO Project Verified (5 Pound) - ARM & HAMMER Baking Soda Made in USA, Ideal for Baking, Pure & Natural, 2.7lb Bag --- ## 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.sg/products/543084856-fzone-4l-aquarium-co2-generator-system-carbon-dioxide-reactor-kit](https://www.desertcart.sg/products/543084856-fzone-4l-aquarium-co2-generator-system-carbon-dioxide-reactor-kit) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-09-05*