Seachem Kalkwasser 1kg
Seachem Kalkwasser is a calcium carbonate solution specifically formulated for marine aquariums. It helps maintain stable calcium and alkalinity levels, which are essential for the health of corals and other marine invertebrates.
Key Features
- Provides stable calcium levels for coral growth
- Helps maintain alkalinity in marine tanks
- Safe for use in reef aquariums
- Ready-to-use, no mixing required
Specifications
| Parameter | Value |
|---|---|
| Weight | 1kg |
| Form | Clear liquid |
| Calcium Content | 400 mg/L |
| Alkalinity Content | 1.5 dKH |
| Storage | Store in a cool, dry place away from direct sunlight |
FAQ
Can Seachem Kalkwasser be used in freshwater aquariums?
No, Seachem Kalkwasser is designed for marine aquariums only and should not be used in freshwater systems.
How often should I add Seachem Kalkwasser to my tank?
The frequency depends on your tank’s calcium and alkalinity levels. Follow your test results and adjust accordingly, typically every 1-2 weeks.
Is Seachem Kalkwasser safe for fish and invertebrates?
Yes, it is safe for use in reef aquariums and does not harm fish or invertebrates when used as directed.

Carl Sutherland –
I’ve been using Seachem Kalkwasser for three months now and my coral growth has improved significantly. The calcium levels stay stable, and my tank feels more balanced. Easy to measure and add. No issues with my fish or invertebrates.
Alison Slater –
Good product for maintaining alkalinity. I noticed a steady improvement in my polyps’ health. It’s a bit expensive, but worth it for reef tanks. I mix it once a week based on test results.
Edward Sharp –
The solution is clear and easy to use. My tank’s calcium levels have stayed within the ideal range. I’ve had no problems with pH or coral bleaching since starting to use it.