--- product_id: 522475150 title: "FZONE 2.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit DIY Co2 Kit with Regulator And Needle Valve For Aquatic Tank (with solenoid)" brand: "fzone" price: "1310.95 DT" currency: TND in_stock: true reviews_count: 13 category: "Fzone" url: https://www.desertcart.tn/products/522475150-fzone-2-5l-aquarium-co2-generator-system-carbon-dioxide-reactor store_origin: TN region: Tunisia --- # 2.5L SUS304 stainless steel reactor 12V DC solenoid timer control Precision needle valve with bubble counter FZONE 2.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit DIY Co2 Kit with Regulator And Needle Valve For Aquatic Tank (with solenoid) **Brand:** fzone **Price:** 1310.95 DT **Availability:** ✅ In Stock ## Summary > 🌿 Elevate your aquarium game with precision CO2 control—because your plants deserve the best! ## Quick Answers - **What is this?** FZONE 2.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit DIY Co2 Kit with Regulator And Needle Valve For Aquatic Tank (with solenoid) by fzone - **How much does it cost?** 1310.95 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/522475150-fzone-2-5l-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 - • **Precision CO2 Control:** Fine-tune your aquatic environment with a high-accuracy needle valve and integrated bubble counter for steady 1 bps output. - • **Smart Timed Injection:** 12V DC solenoid valve lets you schedule CO2 release, optimizing plant growth while saving resources. - • **DIY Customization Power:** Complete kit includes regulator and needle valve—just add affordable citric acid and bicarbonate powders to start thriving aquatic life. - • **Industrial-Grade Durability:** 1.5mm thick SUS304 stainless steel bottle withstands up to 1137 PSI for ultimate safety and longevity. - • **Trusted Reliability & Support:** Backed by a 1-year warranty and 24/7 customer service, ensuring your aquarium stays lush and vibrant without interruption. ## Overview The FZONE 2.5L Aquarium CO2 Generator System is a professional-grade DIY kit featuring a robust SUS304 stainless steel reactor bottle, precision needle valve with bubble counter, and a 12V DC solenoid for timed CO2 injection. Designed for aquatic plant enthusiasts, it delivers steady, adjustable CO2 output to boost plant growth and reduce algae. Easy to set up and maintain, this system offers safety, durability, and fine control, backed by a one-year warranty and responsive customer support. ## Description Product Description INSTRUCTIONS Mix 300-400 gram citric acid and 300-400 gram sodium bicarbonate inside the bottle Add 500-600ml tap water to the bottle and cap the bottle with the enclosed regulator quickly While the CO2 gas is produced slowly inside the bottle, adjust the needle valve accordingly. It takes approximately 45 minutes for the bubbles to stabilize after each needle valve adjustment If the solenoid is purchased, remove the bubble counter from the regulator (do NOT unscrew the regulator) and attach the solenoid to it. Connect the power cord to the electrical outlet. As gas is continued to generate inside the bottle, adjust the needle valve to the desired bubble count Q: Is the bottle body strong enough under the pressure? what are the specific parameters? A: Yes. The bottle is completely safe. The bottle has a safety valve built-in. It will open automatically when the inside pressure exceeds the threshold Ideal DIY aquatic co2 system with profesional co2 tubing ,glass diffuser... CO2 generator is based on the principle reaction of citric acid and sodium bicarbonate mix with water, high purity of carbon dioxide gas is produced. After fully reaction, the CO2 goes through a pressure regulator, bubble counter and diffuser, provide a stable output pressure and flowrate, supply CO2 for photosynthesis, completely solve the disadvantages of the reactive generator pressure instability. Fzone‘s CO2 generator kits included almost all stuffes needed in auqatic co2 system. 8ft professional PU tubing(NOT normal silica gel metial) with fixing suction cups, super clear. glass diffuser with U shape connector. funnel and measuring cup make it easy for you to replace the raw metirals Dual gauge regulator together with safety valve, bubble counter Precision needle valve. The CO2 flowrate allowing to go as slow as 1 bubble per 5 seconds with our high precision needle valve. Safety valve, will open automatically when the pressure is higher than the allowed threshold. Bubble Counter, you can read your CO2 flow rate directly on the bubble counter cylinder. Bubble counter with check valve built-in to stop water from back-flowing to CO2 tank. Pressure indicator , indicates when it’s time to refill raw materials. OTS Mini DC 12V Solenoid Valve ●OTS 12V DC mini solenoid valve, safer than AC solenoid. ● Energy-saving - low power consumption: 0.4 watt only. keeps the solenoid cool to the touch during operation. ● Use with a timer, solenoid valve allows for CO2 to be switched on/off at defined times, e.g. to synchronize with the aquarium lighting. ● Red LED on/off indicator - the operation (on / off) of the solenoid valve can be confirmed by the red LED. ● No noise - without buzzing or humming sound. ● High-quality model - OST brand, special structure for long-lasting durability and dependability. Upgraded bottle height and diameter rate, solid material used Bottle height upgraded to 15inch (1inch higher than the 2L generator bottle), avoiding the overflow efficiently before the regulator screw in which is caused by the reactor of the citric acid and sodium bicarbonate. The bottle is made of 1.5mm of SUS304 stainless steel (25% thicker than the regular 1.2mm bottle) and can sustain a pressure of 1137 PSI. Fzone Aquarium Co2 Generator Professional and safe! Easy to set up! No mess and very effective! A perfect complement to nano planted tank. Attention Adding excessive raw materials and water is prohibited. It is forbidden to invert the bottle. Stronger acid and alkali raw materials are prohibited. When using this product for the first time, there will be large bubbles in the diffuser, which will gradually disappear within 2-3 days. What's in package SUS304 stainless steeL bottle Regulator OTS mini solenoid Diffuser set (with U connector) Power adapter Funnel and Measuring cup 8 ft PU CO2 proof tubing (with suction cups) Review: FZone 2.5L CO2 Generator - After carrying out a lot of research I decided this system would be the best bang for bucks system for my 120L system. I've been running the generator for 3 months now and I'm really impressed with it. It was easy to set up and the raw ingredients are cheap and easily purchased from desertcart. The powders are added and then the water is added very slowly with the bottle at a 45 degree angle. pouring it slowly slows down the chemical reaction and stops you wasting gas as you screw the regulator on to the bottle. I was getting 2 weeks of CO2 from one charge and when I added a CO2 reactor that figure went up to almost 4 weeks. 4 weeks of CO2 from 200g of acetic and 260g of Bi Carbonate is in my opinion amazing. The regulator is easy to adjust and the solenoid valve works as it should. The kit itself contains everything you need, except the raw materials and a drop checker. These can be picked up cheaply from desertcart. CO2 has made a big difference to my plants and algae growth is virtually zero now. This kit has been the best piece of kit I have bought for my aquarium in a long time. If you want to add CO2 to your system this is a great straight out of the box solution. Review: Brilliant, works perfect. - The cheapest way as far as im concerned when introducing Co2 to your tank. This is so easy to set up, I purchased this item about two weeks ago and found the diffuser not very good so removed it and purchased an inline diffuser fitted to the outlet pipe close to the filter as possible. I also have the solenoid on a timer so its not running 24hrs, this is a must so you dont hurt your fish. Im running at one bubble every five seconds for eight hours and it works for me and *dont forget to purchase a drop checker*. ## Features - Professional DIY Kit. A complete system in 2.5L 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, 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 citric acid and sodium bicarbonate powders - One-year Warranty：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 | B0B5R18XDV | | Brand | FZONE | | Brand Name | FZONE | | Country Of Origin | China | | Customer Reviews | 4.1 out of 5 stars 580 Reviews | | Global Trade Identification Number | 00689323444083 | | Item Form | Liquid | | Item Weight | 2.36 Kilograms | | Item form | Liquid | | Item weight | 2.36 Kilograms | | Liquid Volume | 2.5 Litres | | Liquid volume | 2.5 Litres | | Manufacturer | FZONE | | Manufacturer Part Number | 2.5 L | | Model Number | 2.5 L | | Number of Packs | 1 | | Target Species | Aquatic Plants | | UPC | 689323444083 | | Unit Count | 1.00 count | | Unit count | 1.00 count | ## Product Details - **Brand:** FZONE - **Item form:** Liquid - **Item weight:** 2.36 Kilograms - **Liquid volume:** 2.5 Litres - **Manufacturer:** FZONE ## Images ![FZONE 2.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit DIY Co2 Kit with Regulator And Needle Valve For Aquatic Tank (with solenoid) - Image 1](https://m.media-amazon.com/images/I/61WHFAHGpsL.jpg) ![FZONE 2.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit DIY Co2 Kit with Regulator And Needle Valve For Aquatic Tank (with solenoid) - Image 2](https://m.media-amazon.com/images/I/71TF5lGVaoL.jpg) ![FZONE 2.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit DIY Co2 Kit with Regulator And Needle Valve For Aquatic Tank (with solenoid) - Image 3](https://m.media-amazon.com/images/I/71KDBPYM7xL.jpg) ![FZONE 2.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit DIY Co2 Kit with Regulator And Needle Valve For Aquatic Tank (with solenoid) - Image 4](https://m.media-amazon.com/images/I/515EbCrL2HL.jpg) ![FZONE 2.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit DIY Co2 Kit with Regulator And Needle Valve For Aquatic Tank (with solenoid) - Image 5](https://m.media-amazon.com/images/I/71hfxPjVENL.jpg) ## Available Options This product comes in different **Pattern** options. ## Questions & Answers **Q: Dose this come with a uk plug or dose it come with an adapter to change it to uk plug ?.** A: If you order from amazon.co.uk, it come with UK plug **Q: How tall is this with the solenoid included? I see the bottle is 15inches but not th full height.** A: Total hight with solenoid and bubble counter is 58cm for the 2.5l unit. **Q: Hi long. Will this last o. A 500 litre tank** A: It depends on how much CO2 you are giving. **Q: Can somebody please tell me how and from where can i purchase the ots 12v dc solenoid for this co2 kit. many thanks** A: You can order it from Amazon as well. As a matter of fact I just ordered one to replace the old one that didn't work anymore. ## Customer Reviews ### ⭐⭐⭐⭐⭐ FZone 2.5L CO2 Generator *by M***N on 1 November 2025* After carrying out a lot of research I decided this system would be the best bang for bucks system for my 120L system. I've been running the generator for 3 months now and I'm really impressed with it. It was easy to set up and the raw ingredients are cheap and easily purchased from Amazon. The powders are added and then the water is added very slowly with the bottle at a 45 degree angle. pouring it slowly slows down the chemical reaction and stops you wasting gas as you screw the regulator on to the bottle. I was getting 2 weeks of CO2 from one charge and when I added a CO2 reactor that figure went up to almost 4 weeks. 4 weeks of CO2 from 200g of acetic and 260g of Bi Carbonate is in my opinion amazing. The regulator is easy to adjust and the solenoid valve works as it should. The kit itself contains everything you need, except the raw materials and a drop checker. These can be picked up cheaply from Amazon. CO2 has made a big difference to my plants and algae growth is virtually zero now. This kit has been the best piece of kit I have bought for my aquarium in a long time. If you want to add CO2 to your system this is a great straight out of the box solution. ### ⭐⭐⭐⭐⭐ Brilliant, works perfect. *by I***N on 27 August 2025* The cheapest way as far as im concerned when introducing Co2 to your tank. This is so easy to set up, I purchased this item about two weeks ago and found the diffuser not very good so removed it and purchased an inline diffuser fitted to the outlet pipe close to the filter as possible. I also have the solenoid on a timer so its not running 24hrs, this is a must so you dont hurt your fish. Im running at one bubble every five seconds for eight hours and it works for me and *dont forget to purchase a drop checker*. ### ⭐⭐⭐⭐ Easy to set up with help of YouTube *by M***H on 18 February 2024* Great product, easy to use just the manual was really poor. It never mentioned the solenoid and how to use it, I had to use YouTube and the bent glass but that sits on the tank where the tubes connect is really fragile and not very well made, I broke mine first day. Other than that it’s a great product my plants have doubled in growth. ## Frequently Bought Together - Fzone 2.5 L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit with Regulator and Needle Valve for Aquarium Plants Tanks - FZONE Aquatic CO2 Glass Drop Checker PH Momitor for Aquarium Plant Fish Tank Test CO2 Kit - Clscea Aquarium CO2 Raw Materials Citric Acid and Baking Soda --- ## 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.tn/products/522475150-fzone-2-5l-aquarium-co2-generator-system-carbon-dioxide-reactor](https://www.desertcart.tn/products/522475150-fzone-2-5l-aquarium-co2-generator-system-carbon-dioxide-reactor) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-29*