Seachem Reef Advantage Calcium
Seachem Reef Advantage Calcium is a reliable calcium supplement designed for marine reef aquariums. It helps maintain optimal calcium levels in the water, which is essential for the health and growth of corals and other reef organisms.
Key Features
- Provides stable calcium levels for coral growth
- Formulated for use in reef aquariums with stable pH and alkalinity
- Easy to dose with precise measurement instructions
Specifications
| Parameter | Value |
|---|---|
| Calcium Content | 400 mg per 100 ml |
| Form | Clear liquid |
| Volume | 500 ml |
| Storage | Store in a cool, dry place away from direct sunlight |
FAQ
How often should I add Seachem Reef Advantage Calcium to my reef tank?
The frequency depends on your tank’s calcium levels and biological activity. Check water test results regularly and add according to the recommended dosage. Typically, a small dose every 1-2 weeks is sufficient for stable conditions.
Can I use this product with other reef supplements?
Yes, Seachem Reef Advantage Calcium can be used alongside other reef supplements such as alkalinity or magnesium boosters. Always monitor water parameters to ensure balance.
Is this product safe for fish and invertebrates?
Yes, Seachem Reef Advantage Calcium is safe for fish and invertebrates when used as directed. It is specifically formulated for reef environments and does not harm sensitive aquatic life.

Audrey Sharp –
I’ve used this calcium supplement for over six months and my corals have grown steadily. The water parameters stay stable, and I don’t need to adjust the dosage often. Easy to measure and effective.
Warren Ellison –
Good product for maintaining calcium levels. I noticed a visible improvement in my polyps after a few weeks. Just make sure to test the water regularly to avoid over-dosing.
Diane Vance –
This is a reliable calcium source that works well with my existing reef setup. No issues with fish or invertebrates. I appreciate the clear instructions and consistent performance.