--- product_id: 524278183 title: "FZONE 5.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit with Regulator and Needle Valve for 600-800g Raw Material" brand: "fzone" price: "$377.27" currency: USD in_stock: true reviews_count: 11 category: "Fzone" url: https://www.desertcart.us/products/524278183-fzone-5-5l-aquarium-co2-generator-system-carbon-dioxide-reactor store_origin: US region: United States of America --- # 12V DC solenoid timer-ready for smart CO2 control Precision needle valve with bubble counter, steady 1 bps 1.5mm SUS304 steel, 25% thicker for max safety FZONE 5.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit with Regulator and Needle Valve for 600-800g Raw Material **Brand:** fzone **Price:** $377.27 **Availability:** ✅ In Stock ## Summary > 🌿 Elevate your planted tank game with precision CO2 control — don’t let your aquatic jungle fall behind! ## Quick Answers - **What is this?** FZONE 5.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit with Regulator and Needle Valve for 600-800g Raw Material by fzone - **How much does it cost?** $377.27 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/524278183-fzone-5-5l-aquarium-co2-generator-system-carbon-dioxide-reactor) ## 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 - • **Backflow Protection:** Built-in check valve prevents water from flowing back into your CO2 tank, protecting your investment from rust and corrosion. - • **Complete DIY System:** Includes everything you need except raw materials—regulator, needle valve, and bubble counter—making it the perfect starter kit for serious aquascaping enthusiasts. - • **Precision CO2 Delivery:** Fine-tune your aquarium’s CO2 flow with the high-accuracy needle valve and integrated bubble counter, achieving a consistent 1 bubble per second for optimal plant growth. - • **Smart Timer Compatibility:** Designed for 12V DC solenoid operation, easily pair with your favorite smart plug or timer to automate CO2 injection and maximize energy efficiency. - • **Industrial-Grade Durability:** Crafted from 1.5mm thick SUS304 stainless steel, this reactor withstands pressures up to 1137 PSI, ensuring unmatched safety and longevity. ## Overview The FZONE 5.5L Aquarium CO2 Generator System is a professional-grade DIY kit featuring a robust 1.5mm SUS304 stainless steel reactor bottle, precision needle valve with bubble counter, and a regulator designed for 12V DC solenoid control. Engineered for aquarists managing 600-800g of raw materials, it delivers steady, fine-tuned CO2 injection to boost plant growth while ensuring safety with a pressure threshold of 1137 PSI and backflow protection. Ideal for millennial plant parents seeking reliable, automated CO2 solutions without the hassle of gas canisters. ## Description desertcart.com : FZONE 5.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit with Regulator and Needle Valve for 600-800g Raw Material : Pet Supplies Review: Amazing find - This tank works amazingly i get the pure citrus acid and baking soda off desertcart and it works great just stick a timer on it and its perfectly been using it for over a year and I still have it with no issues its very sturdy. Never had a leak. I would definitely recommend this product Review: Awesome CO2 Generator - I have been running this setup on my 29 gallon heavily planted tank for about 6 weeks now. Ive had such a great experience with it that I ordered a 2nd setup for a 75 gallon tank that I am in the process of building. Pros: - High quality parts - Efficient CO2 generation. I have have a half a tank worth of pressure after 6 weeks - Easy to read gauges - All of my plants are growing like weeds. I've already had to trim them twice - The glassware that's included is very nice. - Plenty of length provided for the co2 hose Cons. - The instructions need work. Maybe it was me, but I had a hard time understanding them. I found a very helpful video on YouTube that clarified the math behind the citric acid & baking soda ratios. - The needle valve is very sensitive so you have to be careful to let the bubbles even out after touching the adjuster to get an accurate count. Other notes: - The setup is very tall when built. All the pieces mount vertically as well as the connection for the c02 house. I planned on having it in my cabinet but I didn't account for the bubble counter and hose being on top so it wouldn't fit. - The glass "U" connector is sized for a rimless tank. I had to cut a small notch in my tank to be able to use it. It is an easy modification to do but it something you need to consider. - A smart plug that allows for daily schedules makes controlling the system a breeze. I have it programmed to turn on at 8 am and shut off at 5pm. Running co2 at night is a waste as plants don't utilize CO2 without light. My lights are also on a controlled schedule as well but that's a different topic. Over all, this setup is a great way to get started with CO2 injection without having to drive around a find someone to fill CO2 canisters. It's possible it's more expensive to run long-term, but for me, being able to order citric acid and baking soda on desertcart that will last me an entire year vs lugging a tank to a paint all store is 100% worth it. I hope Fzone decides to make a 1 liter or even a half liter generator that I can use on my nano desktop tank. ## Features - Professional DIY Kit: a complete system in 5.5L size bottle, that includes SUS304 stainless bottle, regulator, precision needle valve, and easy adjustable bubble counter - Safe: the bottle body is made of 1.5mm thick SUS304 stainless steel (25% thicker than normal 1.2mm bottle); it can sustain pressure up to 80kg/cm2(or 1137 PSI); safety valve will open automatically when the inside pressure exceeds the safety threshold - Needle Valve with Bubble Counter: high precision, aquarium specific needle valve provides accurate fine-tuning; steady 1 bps is achievable; bubble counter with check valve built-in; it stops water from back flowing into your CO2 tank (protects your CO2 tanks from rust and corrosion) - 12V DC Instead of AC Power: having the solenoid on a timer( not included), you can specify when you want CO2 injection on and for how long - Attentions: the required powders to generate CO2 gas are not included; you will need purchase the citric acid and sodium bicarbonate powders separately. Fzone will offer a round-the-clock service, and you can reach out to us at any time for any product-related concerns. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08THYYFMN | | ASIN | B08THYYFMN | | Best Sellers Rank | #29,908 in Pet Supplies ( See Top 100 in Pet Supplies ) #87 in Aquarium Air Pump Accessories | | Brand Name | FZONE | | Customer Reviews | 4.3 4.3 out of 5 stars (351) | | Date First Available | February 23, 2023 | | Item Form | Liquid | | Liquid Volume | 5.5 Liters | | Manufacturer | FZONE | | Manufacturer | FZONE | | Manufacturer Part Number | FZ-4LKIT-US | | Package Dimensions | 17.2 x 10.94 x 6.97 inches; 7.32 Pounds | | Target Species | Fish and Plants | | UPC | 764595876395 | | Unit Count | 1.00 Count | ## Product Details - **Brand:** FZONE - **Item Form:** Liquid - **Liquid Volume:** 5.5 Liters - **Manufacturer:** FZONE - **UPC:** 764595876395 ## Images ![FZONE 5.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit with Regulator and Needle Valve for 600-800g Raw Material - Image 1](https://m.media-amazon.com/images/I/61WHFAHGpsL.jpg) ## Available Options This product comes in different **Pattern** options. ## 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 ### ⭐⭐⭐⭐⭐ Amazing find *by J***L on February 2, 2026* This tank works amazingly i get the pure citrus acid and baking soda off Amazon and it works great just stick a timer on it and its perfectly been using it for over a year and I still have it with no issues its very sturdy. Never had a leak. I would definitely recommend this product ### ⭐⭐⭐⭐⭐ Awesome CO2 Generator *by D***H on November 26, 2025* I have been running this setup on my 29 gallon heavily planted tank for about 6 weeks now. Ive had such a great experience with it that I ordered a 2nd setup for a 75 gallon tank that I am in the process of building. Pros: - High quality parts - Efficient CO2 generation. I have have a half a tank worth of pressure after 6 weeks - Easy to read gauges - All of my plants are growing like weeds. I've already had to trim them twice - The glassware that's included is very nice. - Plenty of length provided for the co2 hose Cons. - The instructions need work. Maybe it was me, but I had a hard time understanding them. I found a very helpful video on YouTube that clarified the math behind the citric acid & baking soda ratios. - The needle valve is very sensitive so you have to be careful to let the bubbles even out after touching the adjuster to get an accurate count. Other notes: - The setup is very tall when built. All the pieces mount vertically as well as the connection for the c02 house. I planned on having it in my cabinet but I didn't account for the bubble counter and hose being on top so it wouldn't fit. - The glass "U" connector is sized for a rimless tank. I had to cut a small notch in my tank to be able to use it. It is an easy modification to do but it something you need to consider. - A smart plug that allows for daily schedules makes controlling the system a breeze. I have it programmed to turn on at 8 am and shut off at 5pm. Running co2 at night is a waste as plants don't utilize CO2 without light. My lights are also on a controlled schedule as well but that's a different topic. Over all, this setup is a great way to get started with CO2 injection without having to drive around a find someone to fill CO2 canisters. It's possible it's more expensive to run long-term, but for me, being able to order citric acid and baking soda on Amazon that will last me an entire year vs lugging a tank to a paint all store is 100% worth it. I hope Fzone decides to make a 1 liter or even a half liter generator that I can use on my nano desktop tank. ### ⭐⭐⭐⭐⭐ Solid Unit that functions really well! *by J***S on January 22, 2026* This thing is great! I purchased the 5.5L option and it has consistently served me well. A couple of tips ( I consistently get 400-500psi) when mixing the baking soda and citric acid, you can't go wrong following SS Aquascapes YouTube channel on getting max psi from this unit. I typically refill every 4-5 months. Very much worth, my tanks never looked better! ## 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.us/products/524278183-fzone-5-5l-aquarium-co2-generator-system-carbon-dioxide-reactor](https://www.desertcart.us/products/524278183-fzone-5-5l-aquarium-co2-generator-system-carbon-dioxide-reactor) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-10*