Test wody #9735342

Test Sea water: 9735342

Aquarium (SPS): 350

Date: 2026-09-11

Element	Recommended result	Result	Difference
Salinity Salinity	33 - 38 ppt	36 ppt	+ 0.5 ppt
Recommended result: 35.5 ppt Result: 36 ppt Salinity Salinity is one of the most important parameters. Avoid sudden salinity changes as they're harmful to the aquatic life. Make sure, that you use freshly calibrated refractometer dedicated for seawater (not for the food industry!). Keep in mind, that the higher salinity is, the higher are the levels of micro & macro elements in the water. When salinity drops, all levels of the water elements will drop too.
KH KH	6.5 - 8.5 dKH	8.4 dKH	+ 0.9 dKH
Recommended result: 7.5 dKH Result: 8.4 dKH KH The correct KH level in a saltwater aquarium allows corals to build skeletons and provides healthy growth. The right amount of carbonate ions allows keeping pH at a stable level. Stability is extremely important for this parameter, so if your corals start whitening from the bottom, you should consider controlling your KH levels more frequently.
PO4 Phosphate	0 - 0.0300 mg/l	0.2464 mg/l	+ 0.2464 mg/l
Recommended result: 0 mg/l Result: 0.2464 mg/l Recommendations Warning! Level of PO4 is too high, if you want to lower it, do a water change and use Phosphate Minus and NitraPhos Minus. You can also use Pro Bio S and -NP Pro. Phosphate Phosphate in the aquarium water appear as a side effect of feeding the fish. They're a media for the development of undesirable algae. During intensive feeding, you should remember not only about the use of phosphate lowering agents or about regular water changes.
Al Aluminum	0 - 0.0100 mg/l	0.0091 mg/l	+ 0.0091 mg/l
Recommended result: 0 mg/l Result: 0.0091 mg/l Aluminum The concentration of aluminum in the natural seawater is about 10 µg/l. In case of increased level of this element in the tank, change the water in order to emove it excess.
As Arsenic	0 - 0.0030 mg/l	0 mg/l	-
Recommended result: 0 mg/l Result: 0 mg/l Arsenic In the ocean water, it is present in a very low concentration (up to 3 µg/l). Most of the arsenic is absorbed by phytoplankton. Due to its toxicity, elevated arsenic levels are dangerous to marine life.
B Boron	4.05 - 5.00 mg/l	3.51 mg/l	- 1.015 mg/l
Recommended result: 4.525 mg/l Result: 3.51 mg/l Recommendations Warning! Level of boron is too low. Please remember, that maximum safe daily dose is 20 ml per 100 litres of water. If you need a higher dose, split it into a few days. Correct the result by using: Borium Suggested dosage for your tank: 71.05 ml Boron It is an important component of seawater. It takes part in the metabolism of calcium and accelerates the growth of coralline algae. Proper boron levels support the development of coral skeletons and also improve coloration.
Ba Barium	0.0010 - 0.0400 mg/l	0.0078 mg/l	- 0.0127 mg/l
Recommended result: 0.0205 mg/l Result: 0.0078 mg/l Barium A natural component of seawater. Barium is regularly consumed by aquarium inhabitants. In heavily stocked aquariums, water changes may not be sufficient to maintain barium at the appropriate level, then additional supplementation is recommended.
Be Beryllium	0 - 0.0050 mg/l	0 mg/l	-
Recommended result: 0 mg/l Result: 0 mg/l Beryllium It is an undesirable element in aquariums. It also doesn't occur in the natural seawater. In order to remove beryllium, perform a water change and, if possible, eliminate the source of contamination.
Cd Cadmium	0 - 0.0002 mg/l	0 mg/l	-
Recommended result: 0 mg/l Result: 0 mg/l Cadmium In natural seawater it occurs up to 0.2 µg/l concentration. It appears as pollutant in the marine aquariums. It is recommended to change the water, in order to remove cadmium from the aquarium.
Co Cobalt	0.0001 - 0.0006 mg/l	0 mg/l	- 0.00035 mg/l
Recommended result: 0.00035 mg/l Result: 0 mg/l Recommendations Warning! Level of cobalt is too low. Please remember, that maximum safe daily dose is 1 ml per 100 litres of water. If you need a higher dose, split it into a few days. ATTENTION! New concentration. If you have Cobaltum with the new (purple) label, divide the recommended dose by 2. Correct the result by using: Cobaltum Suggested dosage for your tank: 2.45 ml Cobalt It supports the coloration of fish and is essential for the growth of beneficial algae, bacteria and animals. It is extremely important for metabolic changes, it is part of vitamin B12. In a closed aquarium system, it is regularly consumed by its inhabitants.
Cr Chromium	0.0001 - 0.0004 mg/l	0 mg/l	- 0.00025 mg/l
Recommended result: 0.00025 mg/l Result: 0 mg/l Recommendations Warning! Level of chromium is too low. Please remember, that maximum safe daily dose is 1 ml per 100 litres of water. If you need a higher dose, split it into a few days. ATTENTION! New concentration. If you have Chromium with the new (purple) label, divide the recommended dose by 2. Correct the result by using: Chromium Suggested dosage for your tank: 1.75 ml Chromium Chromium is an essential micronutrient that significantly influences the growth of marine organisms. Its appropriate content in aquarium water supports the calcification of skeletons in invertebrates and has a positive effect on the corals coloration.
Cu Copper	0 - 0.0012 mg/l	0.0887 mg/l	+ 0.0887 mg/l
Recommended result: 0 mg/l Result: 0.0887 mg/l Recommendations Warning! Level of copper is too high, if you want to lower it, do a water change. It's worth to test your RO water for contaminants. Copper It occurs naturally in marine waters, but its excess is toxic. Too high level of copper is fatal to invertebrates. Usually it appears in the aquarium when using medications based on copper sulfate.
Fe Iron	0.0020 - 0.0060 mg/l	0.0001 mg/l	- 0.0039 mg/l
Recommended result: 0.004 mg/l Result: 0.0001 mg/l Recommendations Warning! Level of iron is too low. Please remember, that maximum safe daily dose is 1 ml per 100 litres of water. If you need a higher dose, split it into a few days. ATTENTION! New concentration. If you have Ferrum with the new (purple) label, divide the recommended dose by 4. Correct the result by using: Ferrum Suggested dosage for your tank: 13.65 ml Iron It plays an important role in the photosynthesis process, therefore its supplementation improves the process of coral nutrition. Supports green coloration. Excess of iron can cause algae.
Hg Mercury	0 - 0.0050 mg/l	0 mg/l	-
Recommended result: 0 mg/l Result: 0 mg/l Mercury It does not occur in natural seawater. It appears as a pollutant in aquariums and is very undesirable due to its harmfulness to marine organisms. Water changes will help lower the mercury levels in the aquarium.
I Iodine	0.0550 - 0.0700 mg/l	0.0488 mg/l	- 0.0137 mg/l
Recommended result: 0.0625 mg/l Result: 0.0488 mg/l Recommendations Warning! Level of iodine is too low, if you want to raise it, use Iodum. Please remember, that maximum safe daily dose is 2 ml per 100 litres of water. If you need a higher dose, split it into a few days. Correct the result by using: Iodum Suggested dosage for your tank: 4.8 ml Iodine It is an extremely important microelement for corals and invertebrates. It boosts dark blue and purple coloration of hard corals. Iodine has disinfectant properties and is also very helpful in breeding marine fish.
La Lanthanum	0 - 0.0050 mg/l	0 mg/l	-
Recommended result: 0 mg/l Result: 0 mg/l Lanthanum Lanthanum is not found in natural marine waters. If it occurs in aquarium water, it should be treated as a pollutant. In order to remove lanthanum from the aquarium, change the water.
Li Lithium	0.1500 - 0.2000 mg/l	0.2040 mg/l	+ 0.029 mg/l
Recommended result: 0.175 mg/l Result: 0.2040 mg/l Recommendations Warning! Level of lithium is too high, if you want to lower it, do a water change. Lithium It naturally occurs in the seawater. In the natural environment of corals, it is present in a small but significant concentration, that is important for their health. The correct level of lithium provides keeping marine organisms good condition.
Mn Manganum	0.0001 - 0.0022 mg/l	0.0003 mg/l	- 0.00085 mg/l
Recommended result: 0.00115 mg/l Result: 0.0003 mg/l Recommendations Warning! Level of manganese is too low. Please remember, that maximum safe daily dose is 1 ml per 100 litres of water. If you need a higher dose, split it into a few days. ATTENTION! New concentration. If you have Manganum with the new (purple) label, divide the recommended dose by 4. Correct the result by using: Manganum Suggested dosage for your tank: 2.98 ml Manganum Similar to other trace elements, it is regularly consumed by the inhabitants of the aquarium. In heavily stocked tanks, water changes may not be sufficient to maintain its appropriate level, so sometimes additional supplementation is necessary.
Mo Molybdenum	0.0045 - 0.0120 mg/l	0.0016 mg/l	- 0.00665 mg/l
Recommended result: 0.00825 mg/l Result: 0.0016 mg/l Recommendations Warning! Level of molybdenum is too low. Please remember, that maximum safe daily dose is 2 ml per 100 litres of water. If you need a higher dose, split it into a few days. ATTENTION! New concentration. If you have Molybdenum with the new (purple) label, divide the recommended dose by 4. Correct the result by using: Molybdenum Suggested dosage for your tank: 23.28 ml Molybdenum It has a positive effect on enzymatic processes in marine aquariums. Its appropriate level boosts coloration of SPS and LPS corals.
Ni Nickel	0.0010 - 0.0100 mg/l	0.0061 mg/l	+ 0.0006 mg/l
Recommended result: 0.0055 mg/l Result: 0.0061 mg/l Nickel Nickel is found in natural seawater as a trace element. Despite its very low content, it plays an extremely important role in the proper growth of corals. It improves coloration and helps keeping them in a good condition. Its deposits are regularly consumed by the inhabitants of the aquarium.
Pb Lead	0 mg/l	0 mg/l	-
Recommended result: 0 mg/l Result: 0 mg/l Lead Lead is a heavy metal that is not found in the natural seawater. It appears as pollution in reef aquariums. Due to its toxicity to marine life, it is undesirable in an aquarium.
Sb Antimony	0 - 0.0005 mg/l	0 mg/l	-
Recommended result: 0 mg/l Result: 0 mg/l Antimony Very low level of antimony occurs in natural sea waters. If it appears in the aquarium, it should be treated as contamination. You can eliminate antimony by changing the water.
Sc Scandium	0 - 0.0050 mg/l	0 mg/l	-
Recommended result: 0 mg/l Result: 0 mg/l Scandium Scandium is a metal that is not found in natural sea waters. It appears as pollutant in the aquariums. Changing the water will help eliminate scandium in the tank.
Se Selenium	0 - 0.0015 mg/l	0 mg/l	-
Recommended result: 0 mg/l Result: 0 mg/l Selenium Occurs naturally in the seawater in very small amounts. If it occurs in an aquarium, it is most often the result of contamination. A water change will help eliminate selenium from the aquarium.
Si Silicon	0.0200 - 2.9000 mg/l	0.1580 mg/l	- 1.302 mg/l
Recommended result: 1.46 mg/l Result: 0.1580 mg/l Silicon Excess of silicon is undesired in the aquarium. While silicates are not dangerous to the aquatic life, they have a huge impact on the formation of unwanted algae. Too high a level leads to the formation of diatoms.
Sn Tin	0 - 0.0010 mg/l	0 mg/l	-
Recommended result: 0 mg/l Result: 0 mg/l Tin It occurs in seawater in a very low concentration. Elevated levels of tin in the aquarium may be caused by the use of aquarium equipment made of inappropriate materials.
Ti Titanium	0 - 0.0100 mg/l	0 mg/l	-
Recommended result: 0 mg/l Result: 0 mg/l Titanium It occurs in natural seawater up to 10 µg/l. In the aquarium, it should be treated as a pollutant. In order to remove titanium from the tank, change the water.
V Vanadium	0.0001 - 0.0025 mg/l	0 mg/l	- 0.0013 mg/l
Recommended result: 0.0013 mg/l Result: 0 mg/l Recommendations Warning! Level of vanadium is too low. Please remember, that maximum safe daily dose is 1 ml per 100 litres of water. If you need a higher dose, split it into a few days. ATTENTION! New concentration. If you have Vanadium with the new (purple) label, divide the recommended dose by 2. Correct the result by using: Vanadium Suggested dosage for your tank: 4.55 ml Vanadium Vanadium is a trace element, that occurs naturally in the seawater. It is an important enzyme activator. This element also participates in the metabolism of carbohydrates and the mineralization of skeletons.
W Wolfram	0 - 0.0050 mg/l	0 mg/l	-
Recommended result: 0 mg/l Result: 0 mg/l Wolfram Wolfram is not found in natural marine waters. It appears as pollution in aquariums. In order to remove wolfram from the aquarium, make a water change.
Zn Zinc	0.0010 - 0.0070 mg/l	0.0065 mg/l	+ 0.0025 mg/l
Recommended result: 0.004 mg/l Result: 0.0065 mg/l Zinc It occurs in natural seawater, and its deposits are regularly consumed by aquarium inahbitants. Zinc is a component of many enzymes responsible for various processes, including protein metabolism. It affects cell division, tissue repair, and stimulates growth.
P Phosphorus	0 - 0.0100 mg/l	0.0804 mg/l	+ 0.0804 mg/l
Recommended result: 0 mg/l Result: 0.0804 mg/l Recommendations Warning! Level of phosphorus is too high, if you want to lower it, do a water change and use Phosphate Minus or NitraPhos Minus. You can also use Pro Bio S combined with -NP Pro. Phosphorus Phosphate in the aquarium water appear as a side effect of feeding the fish. They are a media for the development of undesirable algae. During intensive feeding, you should remember not only about the use of phosphate lowering media, but also about regular water changes.
Na Sodium	9720 - 11880 mg/l	10786 mg/l	- 14 mg/l
Recommended result: 10800 mg/l Result: 10786 mg/l Sodium It is the main component of marine waters. Its concentration varies from 9720-11880 mg/l at the salinity of 33-35 ppt. In the aquarium, it comes from dissolved sodium salt and from sodium bicarbonate used to maintain an adequate level of alkalinity.
Ca Calcium	380 - 460 mg/l	461 mg/l	+ 41 mg/l
Recommended result: 420 mg/l Result: 461 mg/l Recommendations Warning! Level of calcium is too high, if you want to lower it, do a water change. Calcium It's a building block necessary for the proper growth and development of coral skeletons, shrimp and clam shells. The more heavily stocked the aquarium is, the more it increases the demand for calcium. In the natural seawater, the calcium level is approx. 420 mg/l.
Mg Magnesium	1180 - 1460 mg/l	1473 mg/l	+ 153 mg/l
Recommended result: 1320 mg/l Result: 1473 mg/l Recommendations Warning! Level of magnesium is too high, if you want to lower it, do a water change. Magnesium Its main task is faciliating the calcium absorption. Correct level has a positive effect on the skeletons and appearance of corals. It plays an important role in preventing excessive precipitation of calcium and carbonate. Low magnesium content can lower the pH level in the tank and make it difficult to maintain an adequate calcium concentration.
K Kalium	360 - 420 mg/l	377 mg/l	- 13 mg/l
Recommended result: 390 mg/l Result: 377 mg/l Kalium It affects possitively neurological functions. Enhances the pink and red coloration of the corals. In soft corals, potassium plays an important role in nutrients transport.
Br Bromium	55.0 - 74.0 mg/l	89.7 mg/l	+ 25.2 mg/l
Recommended result: 64.5 mg/l Result: 89.7 mg/l Recommendations Warning! Level of bromine is too high, if you want to lower it, do a water change. Bromium Essential component of a natural sea water. Affects positively corals' coloration and their overall condition.
Sr Strontium	6.00 - 10.00 mg/l	7.00 mg/l	- 1 mg/l
Recommended result: 8 mg/l Result: 7.00 mg/l Strontium Besides of calcium and magnesium, it is one of the most important elements necessary for the proper growth of SPS corals. It helps to build skeletal tissue and facilitates calcium absorption.
S Sulfur	740 - 990 mg/l	827 mg/l	- 38 mg/l
Recommended result: 865 mg/l Result: 827 mg/l Sulfur It is one of the naturally occurring macronutrients in marine waters. The appropriate level of sulfur in the aquarium enhances the color of the corals.
NO3 NO3	1.00 - 5.00 mg/l	23.20 mg/l	+ 20.2 mg/l
Recommended result: 3 mg/l Result: 23.20 mg/l NO3 Nitrate

Salinity

KH

Recommendations

Phosphate

Aluminum

Arsenic

Recommendations

Boron

Barium

Beryllium

Cadmium

Recommendations

Cobalt

Recommendations

Chromium

Recommendations

Copper

Recommendations

Iron

Mercury

Recommendations

Iodine

Lanthanum

Recommendations

Lithium

Recommendations

Manganum

Recommendations

Molybdenum

Nickel

Lead

Antimony

Scandium

Selenium

Silicon

Tin

Titanium

Recommendations

Vanadium

Wolfram

Zinc

Recommendations

Phosphorus

Sodium

Recommendations

Calcium

Recommendations

Magnesium

Kalium

Recommendations

Bromium

Strontium

Sulfur

NO3