---
product_id: 549782158
title: "Glass CO2 Drop Checker – CO2 Monitor Kit for Aquarium Planted Tank CO2 System (Drop Checker with Solution)"
brand: "jardli"
price: "$28.35"
currency: USD
in_stock: true
reviews_count: 13
category: "Jardli"
url: https://www.desertcart.us/products/549782158-glass-co2-drop-checker-co2-monitor-kit-for-aquarium-planted
store_origin: US
region: United States of America
---

# Compact size fits most planted tanks Lab-grade borosilicate glass durability Pre-mixed 4dKH indicator solution Glass CO2 Drop Checker – CO2 Monitor Kit for Aquarium Planted Tank CO2 System (Drop Checker with Solution)

**Brand:** jardli
**Price:** $28.35
**Availability:** ✅ In Stock

## Summary

> 🌿 Keep your planted tank thriving—because your aquatic garden deserves precision.

## Quick Answers

- **What is this?** Glass CO2 Drop Checker – CO2 Monitor Kit for Aquarium Planted Tank CO2 System (Drop Checker with Solution) by jardli
- **How much does it cost?** $28.35 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/549782158-glass-co2-drop-checker-co2-monitor-kit-for-aquarium-planted)

## Best For

- jardli enthusiasts

## Why This Product

- Trusted jardli brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Setup:** Includes suction cup and pipette for quick, hassle-free installation in any planted aquarium.
- • **Instant CO2 Status:** Color-changing indicator instantly reveals if your tank’s CO2 is perfect, low, or high.
- • **Durability Meets Design:** Crafted from premium borosilicate glass for long-lasting strength and sleek aesthetics.
- • **Vital Plant Health Guardian:** Keep your aquatic plants thriving by maintaining optimal CO2 levels with confidence.
- • **Effortless Precision Monitoring:** Pre-mixed solution means zero guesswork—just fill and monitor.

## Overview

The JARDLI Glass CO2 Drop Checker is a compact, easy-to-use CO2 monitoring kit designed for planted aquariums. Featuring a pre-mixed 4dKH indicator solution and durable borosilicate glass construction, it provides instant, color-coded feedback on CO2 levels to ensure optimal plant health. The kit includes a glass drop checker, indicator solution, and pipette for seamless setup and reliable performance.

## Description

desertcart.com : JARDLI Glass CO2 Drop Checker – CO2 Monitor Kit for Aquarium Planted Tank CO2 System (Drop Checker with Solution) : Pet Supplies

Review: Love this thing - Love this thing. Looks cool, great size for my 29 gallon. Easy to set up, need to get another one for my other tanks
Review: It’s great! - These are great. I like the circle design as it’s more unique. The drop checker works perfectly and is well made. I made it clap on a handstand out of pure joy at how much I enjoy this checker.

## Features

- Easy To Use: It consists of a pre-made 4dKH solution containing the appropriate amount of indicator. No mixing is required. Just fill the carbon dioxide monitor drop checker 1/2 full of indicator solution and place it in the planted tank with the help of the suction cup.
- Precise Readings: If the indicator solution is green in color, then appropriate levels of carbon dioxide exist in the aquarium, and no action is required. If the solution in the drop checker changes to blue or yellow, then the CO2 levels in the aquarium are too low or too high, respectively.
- Essential Item: You need to be very careful about your plants' health; carbon dioxide is one of their major requirements. This CO2 monitor kit is one of your aquarium kit's most vital items that helps you keep a constant check on CO2 levels in the water.
- Quality Guaranteed: The drop checker is made of the highest quality, laboratory-grade, borosilicate glass ​for maximum strength and durability.
- Complete kit includes: 1x glass drop checker, 1x bottle of pre-mixed indicator solution (15 mL / 0.5 fl oz), 1x pipette

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C9WM7TKY |
| ASIN  | B0C9WM7TKY |
| Best Sellers Rank | #25,194 in Pet Supplies ( See Top 100 in Pet Supplies ) #37 in Aquarium Test Kits |
| Brand Name | JARDLI |
| Customer Reviews | 4.5 4.5 out of 5 stars (467) |
| Date First Available | July 1, 2023 |
| Date First Available  | July 1, 2023 |
| Item Package Dimensions L x W x H | 4.49 x 3.78 x 1.73 inches |
| Item Weight | 1.58 ounces |
| Manufacturer | JARDLI |
| Manufacturer  | JARDLI |
| Package Dimensions  | 4.49 x 3.78 x 1.73 inches; 1.59 ounces |

## Images

![Glass CO2 Drop Checker – CO2 Monitor Kit for Aquarium Planted Tank CO2 System (Drop Checker with Solution) - Image 1](https://m.media-amazon.com/images/I/71M7eBOprqL.jpg)

## Available Options

This product comes in different **Pattern** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Love this thing
*by G***S on June 24, 2025*

Love this thing. Looks cool, great size for my 29 gallon. Easy to set up, need to get another one for my other tanks

### ⭐⭐⭐⭐⭐ It’s great!
*by P***0 on March 17, 2025*

These are great. I like the circle design as it’s more unique. The drop checker works perfectly and is well made. I made it clap on a handstand out of pure joy at how much I enjoy this checker.

### ⭐⭐⭐⭐⭐ Why so blue
*by M***E on July 24, 2023*

This co2 checker is so blue and waiting for it to turn green. Oh wait, it’s only been 12 seconds since I placed in my tank! If I come back to edit my review, this will mean that it never transitioned to green and that will not be good. Anyway, while I wait, this checker is a perfect size and was easy to fill. It looks better than the traditional co2 checkers in my opinion so I hope it works.

## Frequently Bought Together

- JARDLI Glass CO2 Drop Checker – CO2 Monitor Kit for Aquarium Planted Tank CO2 System (Drop Checker with Solution)
- Clscea Aquarium Glass CO2 Diffuser Atomizer with U Tube Check Valve Suction Cup Premium Version

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-01*