Red Sea Trace Colors A/B/C/D Pack

Red Sea Trace Colors A/B/C/D Pack is a complete four-bottle supplement set that delivers the 31 minor and trace elements stony corals use to build skeleton and develop pigment. Each bottle targets a specific element group tied to a color pathway or biological function — pair with Red Sea's NO3:PO4-X NOPOX for nutrient control and browse our full additives & supplements lineup.

What's in the Pack

• A — Halogens (Iodine, Bromine, Fluorine)
• B — Potassium & Boron
• C — Iron + 7 Complementary Metals
• D — 18 Bioactive Trace Elements

How Coral Colors Develop

The elements in each supplement are grouped by biological function and tied to specific color pigments — Pink, Red, Green/Yellow, and Purple/Blue — that stony corals produce in their soft tissue. All 31 elements are required by every stony coral regardless of the colors it displays, so dosing the full A/B/C/D set keeps pigment chemistry stable across mixed-reef systems.

Dosing

Dose only what your aquarium actually consumes. Measure consumption with the matching Red Sea test kits, then dial in the daily volume. Pair with the Trace Colors PRO Multi Test Kit (Iodine, Potassium, Iron) and the Algae Control Pro Test Kit to track levels precisely, and run the full Reef Care Program for best color expression.

Specifications

Recommended Pairings

• Red Sea Reef Foundation Pro Multi Test Kit (Ca, Alk, Mg)
• Red Sea Trace Colors PRO Multi Test Kit (I, K, Fe)
• Red Sea Foundation C Magnesium Powder 1 KG
• Red Sea Reef Energy AB+ Coral Food
• Browse the full Red Sea collection

FAQ

Do I have to dose all four bottles?
Yes. Every stony coral uses elements from all four groups regardless of which colors it displays, so skipping one creates an imbalance that limits pigment expression.

How much do I dose?
Dose only what your tank actually consumes. Start low, test with the matching kits, and increase incrementally — overdosing trace elements can do more harm than good.

Is this enough on its own?
No. Coral Colors A/B/C/D handles the trace and minor elements. You also need to maintain Calcium, Alkalinity, and Magnesium using Red Sea's Reef Foundation A/B/C system.

Can I dose this in a fish-only or FOWLR tank?
It's designed for reef tanks with stony corals. In a fish-only system there's no consumer for these elements and they'll just accumulate — skip it.