Red Sea Trace Colors Pro Test Kit

The Red Sea Trace Colors Pro Multi Test Kit measures iodine, potassium and iron in reef aquarium water. These tests support trace-element management when a reef keeper wants measurements to guide the use of targeted supplements.

The kit combines different methods: iodine and iron use colour comparison, while potassium is measured by titration. Each has its own reagent sequence, sample requirements and result range, so use the relevant instructions rather than treating the three tests as the same procedure.

These measurements complement calcium, alkalinity and magnesium testing; they do not replace the foundation tests or provide a complete laboratory trace-element analysis. Record the date and result, confirm unexpected readings, and use the corresponding supplement instructions before making changes. Clean vials, correctly stored reagents and consistent lighting when comparing colours help keep repeated tests useful.