---
product_id: 45218932
title: "sera 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: "148 zł"
currency: PLN
in_stock: true
reviews_count: 13
category: "Sera"
url: https://www.desertcart.pl/products/45218932-sera-co2-tabs-plus-20-tabl-3-1-oz-90
store_origin: PL
region: Poland
---

# Promotes vibrant plant growth 100 ml CO2 release per tablet Instant reaction for steady CO2 supply sera 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:** 148 zł
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your aquarium’s green game with precision CO2 power!

## Quick Answers

- **What is this?** sera 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?** 148 zł 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-sera-co2-tabs-plus-20-tabl-3-1-oz-90)

## 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

- • **Clean & Residue-Free:** Fully dissolves to keep your aquarium pristine and healthy
- • **Effortless Carbon Boost:** Simple tablet form delivers consistent CO2 without complex gear
- • **Tailored Dosing Control:** Adjust usage frequency to match tank size and light exposure for perfect balance
- • **Universal Compatibility:** Seamlessly integrates with most CO2 reactors and diffusion systems
- • **Optimized Plant Vitality:** Enhances root strength and natural leaf coloration for lush aquascapes

## Overview

Sera CO2-Tabs Plus are precision-engineered tablets that release 100 ml of CO2 per tablet, providing a steady, controlled carbon source to freshwater aquarium plants. Designed for easy use with diffusion reactors, these tablets promote strong roots and vibrant leaf color while dissolving completely without residue. Compatible with most CO2 systems, they offer a clean, efficient alternative to liquid additives, empowering aquarists to optimize plant health and growth effortlessly.

## 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 | #120,017 in Pet Supplies ( See Top 100 in Pet Supplies ) #182 in Aquarium Test Kits |
| Brand Name | Sera |
| Customer Reviews | 4.2 4.2 out of 5 stars (836) |
| Date First Available | September 21, 2012 |
| Date First Available  | September 21, 2012 |
| Directions | 1. Check the water parameters of your aquarium or pond. 2. Determine the appropriate number of CO2-Tabs based on the size of your aquarium or pond and the measured water parameters. 3. Place the CO2-Tabs in the specified compartment or equipment in your aquarium or pond. 4. Monitor the water parameters regularly to ensure optimal conditions. 5. Replace the CO2-Tabs as needed, typically every few d… |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 0.87 x 0.87 x 4.92 inches |
| Item Package Dimensions L x W x H | 7.13 x 7.01 x 1.57 inches |
| Item Weight | 90 Grams |
| Item model number | 8040 |
| Item model number  | 8040 |
| Manufacturer | Sera North America, Inc. |
| Manufacturer  | Sera North America, Inc. |
| Manufacturer recommended age  | 1 month and up |
| Number of Items | 1 |
| Product Dimensions  | 0.87 x 0.87 x 4.92 inches; 3.17 ounces |
| Size | 3.2 OZ |
| Style | Classic |
| Target Audience Keyword | Fish |

## Product Details

- **Brand:** Sera
- **Item Form:** Tablets
- **Item Weight:** 90 Grams
- **Liquid Volume:** 100 Milliliters
- **Manufacturer:** Sera North America, Inc.

## Images

![sera 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

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-17*