--- product_id: 45218932 title: "CO2-Tabs Plus 20 Tabl. 3.1 oz (90 g) | Each Tablet Releases 100 ml in Aquarium Co2 Reactor | Simple Use with Diffusion Reactor for Wholesome Plant Growth | C02 for Aquarium Plants" brand: "sera" price: "138 zΕ‚" currency: PLN in_stock: true reviews_count: 13 category: "Sera" url: https://www.desertcart.pl/products/45218932-co2-tabs-plus-20-tabl-3-1-oz-90-g store_origin: PL region: Poland --- # Supports lush plant growth 100 ml CO2 release per tablet Instant reaction in water CO2-Tabs Plus 20 Tabl. 3.1 oz (90 g) | Each Tablet Releases 100 ml in Aquarium Co2 Reactor | Simple Use with Diffusion Reactor for Wholesome Plant Growth | C02 for Aquarium Plants **Brand:** sera **Price:** 138 zΕ‚ **Availability:** βœ… In Stock ## Summary > 🌱 Elevate your aquarium’s green game with every tablet! ## Quick Answers - **What is this?** CO2-Tabs Plus 20 Tabl. 3.1 oz (90 g) | Each Tablet Releases 100 ml in Aquarium Co2 Reactor | Simple Use with Diffusion Reactor for Wholesome Plant Growth | C02 for Aquarium Plants by sera - **How much does it cost?** 138 zΕ‚ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/45218932-co2-tabs-plus-20-tabl-3-1-oz-90-g) ## Best For - sera enthusiasts ## Why This Product - Trusted sera brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Clean & Residue-Free:** Dissolves fully, leaving no harmful residues behind - β€’ **Effortless Carbon Boost:** Simple tablet form delivers steady CO2 without complex gear - β€’ **Universal Compatibility:** Works seamlessly with most CO2 reactors and planted tank setups - β€’ **Precision Plant Nutrition:** Each tablet releases a controlled 100 ml CO2 dose for optimal growth - β€’ **Vibrant Aquarium Ecosystem:** Enhances root strength and natural leaf color for thriving plants ## Overview Sera CO2-Tabs Plus are precision-engineered tablets that release 100 ml of CO2 per tablet, providing a clean, steady carbon source to fuel vibrant freshwater aquarium plants. Designed for easy use with diffusion reactors, these tablets dissolve completely without residue, promoting strong roots and vivid leaf coloration. Compatible with most CO2 systems, they offer a hassle-free solution for millennial aquarists seeking lush, healthy planted tanks. ## Description Sera CO2 tablets for sera CO2-Start. CO2 is the basic plant nutrient and allows adjusting a lightly acidic pH value, as it is preferred by many plants and fish. Review: Sera CO2 Tabs plus is work - Many people say that carbon dioxide ingots are useless! I doubt it, but it's a German sera product and I'm trying to buy and use it. Because it is a famous brand of a big factory, it will not be produced casually. I want to talk about products; The dosage on the instruction manual! If you use it according to it, you will lose your expectations. Let's put it this way! I take my pills, but I don't have a CO2 monitor! Therefore, it is not clear whether the carbon dioxide in the fish tank is present or sufficient, or how it exists! This time I use the monitor, and I can see that it is blue liquid! Verify that there is no carbon dioxide in the fish tank, even the pills put in earlier! I'll put a piece first and pay attention to the change of the monitor. It didn't change at first, but after a while, I noticed that the liquid in the monitor changed slightly from dark blue! I suspected I was wrong, I suspected ❓ in my heart, so I put the second tag in, but I couldn't help putting the third tag in! At first, nothing seems to have changed! However, after a while, I didn't look, looked at the monitor again, and found that it turned green! Yes, it's definitely green! Pay attention to the monitor in the photo. There is no water in the blue pipe, but there is water in the green pipe! Verify that the carbon dioxide gas in the fish tank has entered the monitor! The problem is, according to the factory dose, it is not necessarily correct! And it depends on whether you use it every day or every other day or two! I use 40-60 liters of water to calculate, a bottle has 20 carbon dioxide ingots, how many bottles should I buy in that month! If you don't use it every day, pay attention! I didn't notice when the monitor fluid turned blue. Therefore, we have to measure the dose and whether to use it every day! With the extension of light irradiation time, whether to invest a certain dose and wait for a period of time before starting light irradiation time! This should be observed by oneself, how to control it! I can say for sure that this carbon dioxide ingot is effective! Review: Works with the sera system - Replacement tabs. They do help my plants, but I found the co2 levels to be more inconsistent which causes more algae growth. The inconsistency is worse if you drop tabs in themselves rather than using the sera system as directed. ## Features - EASY CARBON SOURCE: Convenient CO2 tablets for aquarium plants that release a steady carbon supply to support lush, vibrant growth in freshwater aquariums. - SIMPLE APPLICATION: Each tablet reacts instantly in water, providing controlled CO2 injection aquarium support without complex equipment or maintenance. - ENHANCES PLANT HEALTH: Promotes strong roots and natural leaf color. Great complement to aquarium root tabs and nutrient-rich freshwater substrates. - VERSATILE COMPATIBILITY: Works with most CO2 systems for aquariums and diffusion reactors. Perfect for small to medium planted tanks. - CLEAN & EFFICIENT: Dissolves completely without residue. A safe, effective alternative to CO2 booster for aquarium plants or other liquid additives. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0013ZCCCA | | ASIN | B0013ZCCCA | | Best Sellers Rank | #109,430 in Pet Supplies ( See Top 100 in Pet Supplies ) #193 in Aquarium Test Kits | | Brand Name | Sera | | Customer Reviews | 4.2 4.2 out of 5 stars (838) | | Date First Available | September 21, 2012 | | Global Trade Identification Number | 04001942080408 | | Is Discontinued By Manufacturer | No | | Item Form | Tablets | | Item Weight | 90 Grams | | Item model number | 8040 | | Liquid Volume | 100 Milliliters | | Manufacturer | Sera North America, Inc. | | Manufacturer | Sera North America, Inc. | | Manufacturer Part Number | 8040 | | Manufacturer recommended age | 1 month and up | | Model Number | 8040 | | Pet Type | Fish | | Product Dimensions | 0.87 x 0.87 x 4.92 inches; 3.17 ounces | | Target Species | Fish | | UPC | 013560086544 | | Unit Count | 3 Ounce | ## Product Details - **Brand:** Sera - **Item Form:** Tablets - **Item Weight:** 90 Grams - **Liquid Volume:** 100 Milliliters - **Manufacturer:** Sera North America, Inc. ## Images ![CO2-Tabs Plus 20 Tabl. 3.1 oz (90 g) | Each Tablet Releases 100 ml in Aquarium Co2 Reactor | Simple Use with Diffusion Reactor for Wholesome Plant Growth | C02 for Aquarium Plants - Image 1](https://m.media-amazon.com/images/I/51BzMT4WJKL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Sera CO2 Tabs plus is work *by M***M on September 12, 2022* Many people say that carbon dioxide ingots are useless! I doubt it, but it's a German sera product and I'm trying to buy and use it. Because it is a famous brand of a big factory, it will not be produced casually. I want to talk about products; The dosage on the instruction manual! If you use it according to it, you will lose your expectations. Let's put it this way! I take my pills, but I don't have a CO2 monitor! Therefore, it is not clear whether the carbon dioxide in the fish tank is present or sufficient, or how it exists! This time I use the monitor, and I can see that it is blue liquid! Verify that there is no carbon dioxide in the fish tank, even the pills put in earlier! I'll put a piece first and pay attention to the change of the monitor. It didn't change at first, but after a while, I noticed that the liquid in the monitor changed slightly from dark blue! I suspected I was wrong, I suspected ❓ in my heart, so I put the second tag in, but I couldn't help putting the third tag in! At first, nothing seems to have changed! However, after a while, I didn't look, looked at the monitor again, and found that it turned green! Yes, it's definitely green! Pay attention to the monitor in the photo. There is no water in the blue pipe, but there is water in the green pipe! Verify that the carbon dioxide gas in the fish tank has entered the monitor! The problem is, according to the factory dose, it is not necessarily correct! And it depends on whether you use it every day or every other day or two! I use 40-60 liters of water to calculate, a bottle has 20 carbon dioxide ingots, how many bottles should I buy in that month! If you don't use it every day, pay attention! I didn't notice when the monitor fluid turned blue. Therefore, we have to measure the dose and whether to use it every day! With the extension of light irradiation time, whether to invest a certain dose and wait for a period of time before starting light irradiation time! This should be observed by oneself, how to control it! I can say for sure that this carbon dioxide ingot is effective! ### ⭐⭐⭐⭐⭐ Works with the sera system *by J***L on December 20, 2021* Replacement tabs. They do help my plants, but I found the co2 levels to be more inconsistent which causes more algae growth. The inconsistency is worse if you drop tabs in themselves rather than using the sera system as directed. ### ⭐⭐⭐ Try another product *by S***H on August 5, 2019* It didn't seem to work like I thought it would ## Frequently Bought Together - sera 08040 CO2 Tablets Plus (20 CO2 tablets) Suitable for the sera CO2 Start or sera Plant Care Set - Tetra CO2 Plus 250 ml - Tetra FilterActive filter starter with highly active Live Bacteria, supports biological activity in the aquarium, accelerates removal of harmful substances, optimises cleaning performance of the filter, various sizes --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/45218932-co2-tabs-plus-20-tabl-3-1-oz-90-g](https://www.desertcart.pl/products/45218932-co2-tabs-plus-20-tabl-3-1-oz-90-g) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-30*