---
product_id: 6522022
title: "Seachem Reef Kalkwasser 1 Kilo"
brand: "seachem"
price: "Rp2279757"
currency: IDR
in_stock: true
reviews_count: 11
category: "Seachem"
url: https://www.desertcart.id/products/6522022-seachem-reef-kalkwasser-1-kilo
store_origin: ID
region: Indonesia
---

# Highly soluble for perfect limewater mix Precise dosing: 3g per gallon for stable reef chemistry 99.9% pure calcium hydroxide Seachem Reef Kalkwasser 1 Kilo

**Brand:** seachem
**Price:** Rp2279757
**Availability:** ✅ In Stock

## Summary

> 🌊 Keep your reef thriving with science-backed purity and precision!

## Quick Answers

- **What is this?** Seachem Reef Kalkwasser 1 Kilo by seachem
- **How much does it cost?** Rp2279757 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/6522022-seachem-reef-kalkwasser-1-kilo)

## Best For

- seachem enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Stability with Every Drop:** Easily prepare limewater solutions that maintain calcium and carbonate alkalinity at natural seawater levels—your corals will thank you.
- • **Trusted by Hobbyists, Backed by Science:** Over 30 years of expertise from passionate aquarists and chemists means you get a product designed for real-world reef success.
- • **Precision Dosing for Optimal Reef Health:** Control calcium and alkalinity with exact measurements—3g per gallon dissolves perfectly for consistent, safe reef maintenance.
- • **Unmatched Purity for Crystal Clear Reefs:** Seachem Reef Kalkwasser delivers 99.9% pure calcium hydroxide, ensuring your reef’s calcium levels stay pristine and natural.
- • **Seamless Integration with Your Reef System:** Use with your ATO or dosing pump for continuous, hassle-free calcium and alkalinity balance—no more guesswork, just thriving corals.

## Overview

Seachem Reef Kalkwasser is a premium-grade calcium hydroxide powder designed to prepare limewater solutions that maintain calcium and carbonate alkalinity at natural seawater levels. With unmatched purity and solubility, it supports stable reef tank chemistry by replenishing essential minerals. Trusted by hobbyists for over 30 years, this product ensures precise dosing and effortless integration into automated reef systems, promoting vibrant coral growth and long-term aquarium health.

## Description

Reef Kalkwasser is a pure calcium hydroxide with unmatched purity and solubility characteristics. Calcium hydroxide is used to prepare limewater (kalkwasser) solutions that will maintain calcium concentrations at natural seawater levels. Kalkwasser solutions maintain calcium directly and carbonate alkalinity indirectly. For over three decades, Seachem has been a company rooted in sound science. Our experience in the hobby and an educated staff of chemists and biologists are part of the package when you purchase Seachem products. Seachem remains as one of the few surviving independent and privately owned pet care companies. Seachem is owned and operated by hobbyists. All of our employees are hobbyists who maintain aquariums at home and at the office. Seachem itself was started because one such passionate hobbyist - Dr. Leo G. Morin (Founder) - recognized that the available solutions to aquarists problem wanting. This resulted in Seachem’s very first product: Cupraplex (today known as Cupramine). Over thirty years later Seachem is still approaching old problems in a new way. Seachem’s philosophy is that the knowledgeable hobbyist makes the best customer. This is reflected in solid and reliable customer education and support as well as products proven in science and performance. While Seachem has grown rapidly into a national and international firm, it retains the culture of a small company and is readily available to its customers.

Review: Great way to keep your Calcium and Alkalinity stab;e - I've used this product for over 6 months in my 125G reef tank and it has consistently kept my calcium and alkalinity in the 440ppm and 7.5 respectively. My PH is always around 8.2 and I use it in my ATO and I have not had any problems with it. Would definitely buy it again in a few months when it runs out.
Review: Works great! - All corals are happy, some happier after switching from 2 part. Dosing it thru my ato 15g container. Very simple...alc came up nicely to about 8.5 Calcium at like 460...no complaints.

## Features

- PURE: Reef Kalkwasser is a pure calcium hydroxide with unmatched purity and solubility characteristics.
- MAINTAIN: Calcium hydroxide is used to prepare limewater (kalkwasser) solutions that will maintain calcium concentrations at natural sea water levels. Kalkwasser solutions maintain calcium directly and carbonate alkalinity indirectly.
- CAPACITY: Reef Kalkwasser’s capacity to perform these functions is dependent on evaporation rate and CO2 concentration.
- USE: If evaporation rate and CO2 concentration are insufficient you can provide additional calcium with Seachem’s Reef Advantage Calcium, Reef Complete, or Reef Calcium, and carbonate alkalinity with Reef Builder or Reef Carbonate.
- DIRECTIONS: Never add this product directly to the tank. Add 3g (1 teaspoon) to 4L (1 US gallon) of water and mix to dissolve. If using pure water, a fully saturated solution is prepared by adding 6g (2 teaspoons) to 4L (1 US gallon). Drip solution into tank. Beware of overdose and use only what is needed to maintain desired calcium level.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002A5WP6 |
| ASIN  | B0002A5WP6 |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #124,087 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,137 in Aquarium Water Treatments |
| Brand Name | Seachem |
| Customer Reviews | 4.5 4.5 out of 5 stars (80) |
| Date First Available | June 15, 2004 |
| Date First Available  | June 15, 2004 |
| Department | Home & Garden |
| Department  | Home & Garden |
| Directions | Never add this product directly to the tank. Add 3 g (1 teaspoon) to 4 L (1 US gallon) of water and mix to dissolve. If using pure water, a fully saturated solution is prepared by adding 6 g (2 teaspoons) to 4 L (1 US gallon). Drip this solution into tank. Monitor pH and carbonate alkalinity. Adjust rate of addition to maintain a stable pH (8.3–8.4). Notes: Adding 4 L (1 US gallon) of a saturated … |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 7.5 x 5 x 4.9 inches |
| Item Package Dimensions L x W x H | 7.52 x 4.92 x 4.88 inches |
| Item Weight | 1.1 Kilograms |
| Item model number | 116039802 |
| Item model number  | 116039802 |
| Manufacturer | Seachem Laboratories, Inc. |
| Manufacturer  | Seachem Laboratories, Inc. |
| Material | Cotton |
| Model Name | reef Kalkwasser 1 kg |
| Number of Items | 1 |
| Product Dimensions  | 7.5 x 5 x 4.9 inches; 2.43 Pounds |
| Size | 250 g |
| Specific Uses for Product | habitat |
| Target Audience Keyword | dogs, fish, house-cats |

## Product Details

- **Brand:** Seachem
- **Item Form:** Powder
- **Item Weight:** 1.1 Kilograms
- **Liquid Volume:** 4 Liters
- **Manufacturer:** Seachem Laboratories, Inc.

## Images

![Seachem Reef Kalkwasser 1 Kilo - Image 1](https://m.media-amazon.com/images/I/71YyBQDgoEL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great way to keep your Calcium and Alkalinity stab;e
*by E***. on July 31, 2013*

I've used this product for over 6 months in my 125G reef tank and it has consistently kept my calcium and alkalinity in the 440ppm and 7.5 respectively. My PH is always around 8.2 and I use it in my ATO and I have not had any problems with it. Would definitely buy it again in a few months when it runs out.

### ⭐⭐⭐⭐⭐ Works great!
*by F***K on April 3, 2019*

All corals are happy, some happier after switching from 2 part. Dosing it thru my ato 15g container. Very simple...alc came up nicely to about 8.5 Calcium at like 460...no complaints.

### ⭐⭐⭐⭐⭐ Ph booster
*by D***9 on June 1, 2024*

I use it on my top of water to help me boost my ph and it does it very well

## Frequently Bought Together

- Seachem Reef Kalkwasser, 1 kg
- Seachem 67131150 Reef Glue Cyanoacrylate Gel Coral Frag Mounting, 20g
- Salifert Carbonate Hardness & Alkalinity (Kh/Alk) Test Kit, 100-200 Tests

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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-03-07*