Seachem MultiTest Iodine & Iodide Aquarium Test Kit, 75+ Tests

Seachem MultiTest Iodine & Iodide is an aquarium test kit for measuring iodine or iodide from 0–0.1 mg/L, with precision of 0.0025–0.005 mg/L.

• For marine, saltwater and freshwater aquariums — measure iodine or iodide in different aquarium setups.
• Over 75 tests per kit — check levels repeatedly over time.
• Measurement range of 0–0.1 mg/L — assess iodine or iodide within this range.
• Multi-cavity test plate — run multiple tests at the same time.
• Reference sample included — validate the kit’s performance using the test procedure.

Iodine and iodide testing gives aquarium keepers a way to monitor these elements in the water, including in systems with soft or hard corals. The kit is designed for routine measurements in marine, saltwater or freshwater aquariums, with a color chart for reading the test result.

What does the Seachem MultiTest Iodine & Iodide kit measure?

It measures iodine or iodide in aquarium water, with detection to less than 0.005 mg/L. The measurement range is 0–0.1 mg/L, and the kit’s precision is 0.0025–0.005 mg/L. These quantitative readings can be used when monitoring iodine or iodide in aquariums with soft and hard corals.

• Use the test to check iodine or iodide levels in aquarium water.
• The color chart shows changes in 0.0025–0.005 mg/L increments.

How many tests can I run, and can I test more than one sample at once?

The kit performs over 75 tests, and its multi-cavity test plate allows multiple tests to be run at the same time. This lets you carry out more than one measurement in a testing session while using the same kit.

• Suitable for repeated water testing.
• Multiple test cavities support simultaneous testing.

How do I read a result and validate the test kit?

Compare the test sample with the kit’s color chart to read the result. Its 5 cm (1.97 in) viewing window helps isolate the color for a closer match. To validate the kit’s performance, run a test in the normal manner but use the included reference sample instead of aquarium water.

• The reference sample is used in place of an aquarium sample for the validation test.
• The viewing window helps focus the color comparison.

Seachem MultiTest Iodine & Iodide is suited to aquarium keepers who want quantitative iodine or iodide readings, including those monitoring aquariums with soft or hard corals. Its measurement range, repeat-test capacity and included reference sample make it a practical fit for regular aquarium water checks.

Read our guide: A beginner’s aquarium set-up checklist: from bowl to tank