---
product_id: 236051702
title: "Rhinox Glass Drop Checker Kit with pre-Mixed 4dKH & pH Reagent, 3-Minutes' Setup, 3 Seconds to Read Result, Color Change Reflects CO2 Level"
brand: "rhinox"
price: "€ 22.47"
currency: EUR
in_stock: true
reviews_count: 9
category: "Rhinox"
url: https://www.desertcart.es/products/236051702-rhinox-glass-drop-checker-kit-with-pre-mixed-4dkh-ph
store_origin: ES
region: Spain
---

# Pre-mixed 4dKH & pH reagent for precision Glass drop checker ensures 24/7 accurate monitoring 3-second rapid CO2 reading Rhinox Glass Drop Checker Kit with pre-Mixed 4dKH & pH Reagent, 3-Minutes' Setup, 3 Seconds to Read Result, Color Change Reflects CO2 Level

**Brand:** rhinox
**Price:** € 22.47
**Availability:** ✅ In Stock

## Summary

> 🌿 Keep your aquatic ecosystem thriving with precision and style!

## Quick Answers

- **What is this?** Rhinox Glass Drop Checker Kit with pre-Mixed 4dKH & pH Reagent, 3-Minutes' Setup, 3 Seconds to Read Result, Color Change Reflects CO2 Level by rhinox
- **How much does it cost?** € 22.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/236051702-rhinox-glass-drop-checker-kit-with-pre-mixed-4dkh-ph)

## Best For

- rhinox enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Setup:** Set up your drop checker in under 3 minutes and start monitoring immediately.
- • **Instant CO2 Insight:** Get reliable CO2 levels in just 3 seconds—no guesswork, no delays.
- • **Durable Glass Design:** High-quality glass construction resists wear and delivers continuous 24/7 performance.
- • **Visual Color-Coded Alerts:** Blue, green, or yellow—know your tank’s CO2 balance at a glance with zero ambiguity.
- • **Precision-Engineered Reagents:** Pre-mixed 4dKH & pH solution guarantees consistent, lab-grade accuracy.

## Overview

The Rhinox Glass Drop Checker Kit is a must-have for aquarium enthusiasts seeking precise, real-time CO2 monitoring. Featuring a pre-mixed 4dKH & pH reagent, it delivers accurate readings in just 3 seconds after a quick 3-minute setup. Its durable glass design and intuitive color-change system provide continuous, hassle-free CO2 level tracking to maintain optimal aquatic health.

## Description

desertcart.com : Rhinox Glass Drop Checker Kit with pre-Mixed 4dKH & pH Reagent, 3-Minutes' Setup, 3 Seconds to Read Result, Color Change Reflects CO2 Level : Pet Supplies

Review: Works well - Easy to use and the quality of the glass is good. It’s looks huge on my 2.5gal. So far it’s working well and the price isn’t bad either!
Review: PH checker - Great, writing in English and Chinese.

## Features

- High-Quality, Must-Have Kit --- The Rhinox Glass Drop Checker is every aquarium and/or planted tank’s essential tool. Keep the CO2 levels in your tank consistent by checking it regularly. This complete kit contains 1 glass drop checker, 1 suction cup, 1 10ml CO2 indicator solution, and a color chart.
- Easy To Use --- Add 3 drops of CO2 indicator into the glass checker. Next, tilt the checker so that the CO2 indicator fills the checker’s ball about halfway. Then, turn the checker so the opening is facing downward, being careful to keep the indicator fluid in the ball. The indicator fluid should fill the bottom of the ball leaving space at the top of the ball for gaseous exchange. Attach the checker to your tank where you can easily see it and it is completely submerged in the tank.
- Color Change Shows Results --- The color chart makes reading easy and fast without ambiguity. The CO2 indicator is blue in color. When it turns green, that’s the right balance of CO2. Yellow indicates your tank has too much CO2 and blue means you need more CO2. Make the necessary adjustments and test until you get green.
- Accurate Co2 Readings 24/7 --- Rhinox’s glass drop checker is more accurate than pH/KH test strips and once it is attached to your tank, you can monitor your tank’s CO2 levels 24/7 just by looking at the checker. Test strips can be affected by buffers, our glass drop checker is not making it more accurate and reliable.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0895Z9399 |
| ASIN  | B0895Z9399 |
| Best Sellers Rank | #35,055 in Pet Supplies ( See Top 100 in Pet Supplies ) #122 in Aquarium Air Pump Accessories |
| Brand Name | Rhinox |
| Customer Reviews | 4.4 4.4 out of 5 stars (81) |
| Date First Available | October 16, 2020 |
| Date First Available  | October 16, 2020 |
| Directions | 1. Ensure the test kit is clean. 2. Add 3 drops of CO2 indicator into the glass checker. 3. Tilt the checker so that the indicator fluid runs into the ball about halfway. 4. Turn the checker so that the opening faces downward and the fluid remains in the ball. 5. Attach the checker to the tank where it can be easily seen and is completely submerged. 6. Wait for approximately 2 hours for the first … |
| Item Package Dimensions L x W x H | 4.84 x 3.5 x 1.34 inches |
| Item Weight | 0.05 Kilograms |
| Manufacturer | Rhinox |
| Manufacturer  | Rhinox |
| Package Dimensions  | 4.84 x 3.5 x 1.34 inches; 1.76 ounces |

## Product Details

- **Brand:** Rhinox
- **Item Form:** Kit, Granules, Pellets, Tablets
- **Item Weight:** 0.05 Kilograms
- **Liquid Volume:** 10 Milliliters
- **Manufacturer:** Rhinox

## Images

![Rhinox Glass Drop Checker Kit with pre-Mixed 4dKH & pH Reagent, 3-Minutes' Setup, 3 Seconds to Read Result, Color Change Reflects CO2 Level - Image 1](https://m.media-amazon.com/images/I/51ISw52ReEL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well
*by R***. on October 1, 2025*

Easy to use and the quality of the glass is good. It’s looks huge on my 2.5gal. So far it’s working well and the price isn’t bad either!

### ⭐⭐⭐⭐⭐ PH checker
*by R***Y on October 29, 2025*

Great, writing in English and Chinese.

### ⭐⭐⭐⭐⭐ Works As Advertised
*by Q***K on August 4, 2025*

Works as described, included flexible syringe thingy makes it easy to get indicator solution into bulb. Have removed & reattached several times now & suction cup still attaches firmly to glass.

## Frequently Bought Together

- Rhinox Glass Drop Checker Kit with pre-Mixed 4dKH & pH Reagent, 3-Minutes' Setup, 3 Seconds to Read Result, Color Change Reflects CO2 Level
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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-03-03*