Brightwell Vitamarin-C Vitamin C Supplement 8 oz. 250 ml
Contains calcium, strontium, and magnesium in the same ionic ratios found in aragonite. This unique feature increases the usefulness of KALK+2 to reef-building invertebrates such as corals and clams.
Provides temporary alkalinity and helps maintain pH within the desired range when used as directed. Adds no conservative elements, such as chloride, to the aquarium.
Formulated by a marine scientist to improve upon industry-standard powdered calcium supplements. Designed for use in marine aquariums to support coral and invertebrate health.
| Component | Content |
|---|---|
| Calcium | Present |
| Strontium | Present |
| Magnesium | Present |
| Chloride | Not added |
FAQ
What is the main benefit of using this supplement in a marine aquarium?
It provides calcium, strontium, and magnesium in ionic ratios similar to aragonite, supporting coral and invertebrate growth while maintaining stable pH levels without adding chloride.
Does this supplement contain any harmful elements like chloride?
No, this supplement adds no conservative elements such as chloride to the aquarium.
Is it suitable for use with reef-building corals?
Yes, it is specifically formulated to support reef-building invertebrates such as corals and clams.

Ian Taylor –
I’ve used this supplement for three months in my reef tank. My corals have shown better coloration and growth. The pH remains stable, and I don’t notice any chloride buildup. Easy to mix and consistent results.
Wanda Gill –
The calcium and magnesium balance is well-designed. My clams are more active, and the water chemistry stays balanced. No issues with water clarity or pH spikes.
Irene Sharp –
Compared to other calcium supplements I’ve tried, this one works better without introducing unwanted elements. My tank has maintained stable alkalinity over several weeks.