Reef Code B
Reef Code B is a carbonate-bearing supplement designed to dose calcium and carbonates in the same ratio as found in natural seawater. When used in equal amounts with Reef Code A, it provides an ionically-balanced solution that supports stable alkalinity levels.
Formulated by a marine scientist, this product benefits reef-building organisms such as corals, clams, and calcareous algae. It simplifies the maintenance of calcium and alkalinity levels in marine aquariums.
Key features:
- Matches natural seawater calcium and carbonate ratios
- Free from phosphate, silicate, and organic material
- Stronger performance than most competing products
- Designed for use with Reef Code A in a two-part system
| Component | Specification |
|---|---|
| Calcium & Carbonates Ratio | Matches natural seawater |
| Phosphate Content | None |
| Silicate Content | None |
| Organic Material | None |
| Formulation Basis | Marine scientist-developed |
FAQ
What is the recommended ratio when using Reef Code B with Reef Code A?
Use equal amounts of Reef Code B and Reef Code A to achieve the ionically-balanced ratio found in natural seawater.
Does Reef Code B contain any harmful additives?
No, Reef Code B contains no phosphate, silicate, or organic material.
Is Reef Code B suitable for all types of reef tanks?
Yes, it is specifically formulated to support reef-building organisms such as corals, clams, and calcareous algae.

Luke Walsh –
I’ve been using Reef Code B with Reef Code A for three months now. The alkalinity levels have stayed stable, and my corals have grown stronger. No signs of algae or phosphate buildup. Very satisfied with the performance and formulation.
Faith Nash –
The product is easy to mix and maintains consistent calcium and alkalinity. My tank has been running smoothly without frequent adjustments. No organic or silicate contamination detected.
Trevor Hamilton –
Works well with Reef Code A. The calcium levels are stable, and my clams are active. A bit more expensive than some alternatives, but the quality and performance justify the price.
Olivia Skinner –
After switching from a different brand, I noticed a significant improvement in coral health. Reef Code B maintains the right balance without introducing unwanted elements.