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Marine water tests.

Marine test kits
specifically developed for seawater.


In a marine aquarium, it takes time for biology to establish. Be sure to test your aquarium water regularly to maintain and correct your water values. This is important for the care of fish, coral and prevention of algae prevention.

Water testing made
quick & easy.


Reliable & precise
measurement results.


We offer several tests.


Colombo has produced a wide range of test sets to fulfill the varied needs of aquarium hobbyists and specialists.
Do a regular water test to ensure the water parameters are optimal for the coral and fish.

pH Test

Professional drop test for precise determination of pH in seawater. The handy visualised instructions for use, included test tubes and accessories make testing easy. Test range pH 7.6 – 8.6. The contents in the pack are sufficient for 40 tests.

Carbonate Hardness (KH) test

Professional drop test for precise determination of KH in seawater. The handy visualised instructions for use, included test tubes and accessories make testing easy. Titration test set, simplify testing by using the Colombo test stirrer. The contents in the pack are sufficient for 40 tests.

Calcium (Ca) Test

Professional drop test for precise determination of Calcium content in seawater. The handy visualised instructions for use, included test tubes and accessories make testing easy. Titration test set, simplify testing by using the Colombo test stirrer. Depending on the CA value, the contents of the package are on average sufficient for 40 tests.

Magnesium (Mg) Test

Professional drop test for precise determination of Magnesium content in seawater. The handy visualised instructions for use, included test tubes and accessories make testing easy. Titration test set, simplify testing by using the Colombo test stirrer. Depending on the Mg value, the contents of the package are on average sufficient for 40 tests.

Ammonia (NH₃) Test

Professional drop test for precise determination of ammonia levels in seawater. The handy visualised instructions for use, included test tubes and accessories make testing easy. Test range ammonia: 0 – 5 mg/l. The contents in the pack are sufficient for 40 tests.

POâ‚„ Test

Professional drop test for precise determination of phosphate content in seawater. The handy visualised instructions for use, included test tubes and accessories make testing easy. Test range Phosphate 0.03 – 0.8 mg/l. The contents in the pack are sufficient for 40 tests.

Nitrite (NOâ‚‚) Test

Professional drop test for precise determination of nitrite levels in seawater. The handy visualised instructions for use, included test tubes and accessories make testing easy. Testing range nitrite: 0 – 2 mg/l. The contents in the pack are sufficient for 40 tests.

Nitrate (NO₃) Test

Professional drop test for precise determination of nitrate levels in seawater. The handy visualised instructions for use, included test tubes and accessories make testing easy. Test range Nitrate 0 – 4 mg/l. The contents in the pack are sufficient for 40 tests.

Iodine (Iâ‚‚) Test

Professional drop test for precise determination of iodine levels in seawater. The handy visualised instructions for use, included test tubes and accessories make testing easy. Test range Iodine 0 – 0.1 mg/l. The contents in the pack are sufficient for 40 tests.

Potassium (K) Test

Professional drop test for precise determination of potassium levels in seawater. The handy visualised instructions for use, included test tubes and accessories make testing easy. Titration test set, simplify testing with the Colombo test stirrer. Depending on the potassium value, the contents of the package are on average sufficient for 40 tests.

Iron (Fe) Test

Professional drop test for precise determination of iron content in seawater. The handy visualised instructions for use, included test tubes and accessories make testing easy. Test range Iron 0.05 – 0.75 mg/l. The contents in the pack are sufficient for 40 tests.

Sillicate (SiOâ‚‚) Test

Professional drop test for precise determination of Silicate content in seawater. The handy visualised instructions for use, included test tubes and accessories make testing easy. Silicate test range: 0 – 4 mg/l. The contents in the pack are sufficient for 40 tests.