Product Description
Potassium Test Kit for sea water tanks. For the precise determination of potassium in salt water.
Natural potassium levels in coral reefs are 390-400mg/L.

For potassium regulation please use Pohl’s K - Balance or K-Balance strong.

People who bought this item also bought:

High Sensitivity Phosphate Test Kit
Right from the beginning of setting up an aquarium the management of phosphate is of paramount importance. Phosphates enter the aquarium through make up water and foods fed to fish and corals. Once in the aquarium they fuel nuisance algae's and retard or even poison the growth of hard corals. To achieve growth that approaches that of coral in the wild phosphate needs to well managed. Even low levels will inhibit growth, the result is that often many costly resources such as light and water movement are all added to enhance growth will be wasted.

Measurement and detection of phosphate has up till know been through lower quality test kits produced to cost rather than a detection standard. The only alternative for the dedicated has been expensive lab grade kits that offer high sensitivity but also the cost.

The new high sensitivity phosphate test kit goes a good way to squaring that circle offering lab grade performance at a more realistic price. This new test kit rather than offering the ever lightening shade of blue that becomes almost impossible to detect without an electronic colorimeter, changes hue to give a very clear set of low level readings.

A welcome advance

100 tests per kit

Calcium is not the only substance needed to form the skeletal material of corals and allow calcareous algae to grow. Carbonate and bicarbonate are also needed and these two substances can have a major effect on stabilising or buffering pH levels in the aquarium in the correct range of 8.1 to 8.4.

The total carbonate and bicarbonate concentration is also called alkalinity or carbonate hardness and for a stable system the alkalinity should not fluctuate by more than 5% from the optimum level of approx. 2.8 meq/L i.e a maximum fluctuation of 0.14 meq/L.

The Salifert test is sensitive enough to detect small changes in levels of alkalinity, measuring in steps of 0.1 meq/L and demonstrating a very sharp colour change.
Sufficient for 100 to 200 tests.

The Salifert KH + pH buffer additive makes correction of the alkalinity or carbonate hardness simple and does not upset the pH of the system

People who bought this item also bought:

Ammonia and ammonium should be rapidly converted by aerobic nitrification into nitrite and then nitrate and finally into nitrogen gas. If this does not happen then either the aquarium is not fully matured or there is a problem with the tank's biological system, which can be caused by an excessive biological loading being placed on the system.

Regular testing is important on newly set-up tanks or tanks that have had a large increase in bio-load.
If Ammonia is detected remidial action should be taken immediately to prevent stress on the creatures in the tank. A large water change is the first line of defense and a review of what is causing the problem, blocked filters, heavy stocking and feeding.

The Salifert Test Kit measures the total amount of ammonia and ammonium quickly and accurately.
Sufficient for up to 50 tests

In a properly cycled aquarium, nitrite is converted to nitrate and then, if there are areas deprived of oxygen such as in live rock and other filter materials, this nitrate is converted back to nitrite and then transformed into harmless nitrogen gas.

If this cycle breaks down then nitrites, which are extremely toxic to fish and invertebrates, can form in high concentration.

Many nitrite test kits suffer from interference caused by amines e.g naturally occurring and essential amino acids. This can result in a too low measured value, especially when the nitrite concentration is relatively low.
Because of its unique formulation, the Salifert Test Kit does not suffer from amine interference, and offers full colour development within one minute. Also, the colour is very intense making the detection of even minute traces of nitrite easy.

Where nitrite is detected remedial action should be taken in the first instance a large water change will help. An investigation should then be undertaken as to what is causing the problem such as a large increase in stocking or new tank syndrome.

The test kit has two different scales: an ultra-low scale for nitrite-nitrogen which ranges from 0.002 - 0.12 mg/L, and a medium scale for nitrite-nitrogen which ranges from 0.02 - 1.2 mg/L.
Sufficient for 50 tests.



People who bought this item also bought:

When there are insufficient areas of a tank which are deprived of oxygen (anaerobic zones) or denitrification is not taking place properly, nitrate will build up. This can also happen I an aquarium where the biological loading on the system is causing an imbalance e.g is there is excessive livestock for the aquarium volume or over feeding is occurring.

The build up of nitrate can result in unwanted algae growth and the slowing down of coral growth.
The nitrate concentration in a reef aquarium should be lower than 1 mg/L, although fish only aquariums would usually have a higher concentration.

Just as with nitrite, many nitrate test kits are prone to amine interference which can make the levels of nitrate appear much lower than they actually are. The Salifert test kit does not suffer from such interference and gives accurate and quick results with a total testing time of less than 3 minutes.

The test kit’s range goes from a very low to a very high nitrate concentration (approx. 0.2 - 100 mg/L as total nitrate).
Sufficient for 50 tests.

Where Nitrate is detected remedial action should be taken to improve conditions for the aquarium animals. This may be achieved via more regular water changes or by increasing the live rock, the introduction of a deep sand bed or the use of an STM Sulphur Filter. Elevated leves of nitrate will cause browning and change of colouration in many corals.

If phosphate is present in too high a concentration there may be an increase in growth of undesirable algae and if the phosphate level is higher than 0.04 mg/L the growth rate of corals and calcareous algae may decrease by as much as 90%.
Washing fish food (a rich source of phosphates) after thawing can significantly reduce the input of phosphate, and using a high grade, phosphate free activated carbon can also help to keep phosphate levels as low as possible.

We strongly recommend the use of Rowa Phos phosphate remover as the defacto standard for the managment of excess phosphate and silicate. The additon where appropriate of Mangroves and Seagrasses will also help utilise excess nutrients.

It cannot be stressed enough that taking a positive role to limiting this unwanted nutrient is one of the corner stones of a succesfull reef tank.

The Salifert Phosphate test kit detects, in less than 5 seconds, the level of phosphate present.
There are two different ranges within the kit: a low range for phosphate-phosphor from 0.01 - 1 mg/L and a medium range for phosphate-phosphor from 0.02 - 2 mg/L.
Sufficient for 60 tests.

Calcium is a major constituent of coralline algae, the skeletal material of hard corals and the skeletal needles of soft/leather corals. In many cases too low a calcium concentration retards coral and coralline algae growth.
Calcium also fulfils many important biological functions.

In a healthy aquarium, the growth and multiplication of corals, calcareous algae and other organisms can result in calcium depletion. To maintain a stable environment it is important that the calcium content should not fluctuate by more than 15 mg/L from the optimum range of 420 - 450 mg/L so regular testing should be carried out.
This means that any calcium test used should have an accuracy of significantly less than 15mg/L otherwise it will be difficult to monitor such fluctuations.

The Salifert test kit measures in steps of 5 mg/L and has an accuracy of 10 mg/L.
The colour change is precise, detecting small but significant fluctuations in the concentration of calcium.
The test is not affected by magnesium.
Sufficient for at least 50 tests.


Where calcium is found to be below the desired level for succesful growth of the corals we recommend the addition of a balanced additive like C Balance for smaller tank and the use of a quality calcium reactor such as Korallin or Deltec, where the high usage needs replenishment


People who bought this item also bought:

Copper is often used as a treatment for parasite infested fish and it is essential that the correct concentration is used as too high levels can be toxic to marine fish and invertebrates. Tap water can also be naturally high in copper and it is therefore advisable to test for this on a regular basis.

The Salifert test kit offers a very sensitive and accurate test for measuring dissolved or weakly chelated copper from 0.05mg/L to 2mg/L.

Lasts for several copper cures or provides sufficient for up to 50 tests on tap or aquarium water as a routine check.

Important Copper should never be used on a reef tank or system holding invertebrates. In fact we do not recommend any so called reef safe disease treatments, as all seem to affect one invert or another. Disease in fish is largely the result of stress, remove these stress factors and fish become more able to fight disease on their own. If all else fails remove the fish to a seperate matured sick tank and treat with copper to makers specifications.

Corals and marine fish require very high levels of oxygen concentration because of the low solubility of oxygen in salt water so it is very important to regularly test the level of oxygen present.
The Salifert Oxygen Profi-Test is extremely fast, measuring oxygen levels in just a few minutes and is scaled from 2 - 14 mg/L.
Sufficient for 40 tests.

Iodine is present in natural sea water in a very low concentration (0.6 mg/L or 0.06 ppm) and this iodine occurs as several different species including iodide, iodate, molecular iodine and hypoiodite. There is a misconception among many hobbyists that iodide predominates in natural sea water but in fact, it is iodate which is the predominant element.

Test kits which are not capable of detecting iodate are not suitable for aquarium use, since in a properly functioning tank most of the iodide will be transferred to iodate and any test kits not able to detect iodate will give a false, low iodine reading. Iodine test kits should be capable of measuring all forms of naturally occurring iodine. The Salifert Test Kit is the only one offering this feature, measuring all naturally occurring iodine compounds and giving a reading of total iodine concentration.

Unlike many other test kits, the Salifert Iodine Profi-Test is free from interference from other elements found in saltwater, which means the results obtained are very accurate. Colour remains stable for several hours.
Scale goes from 0.01 - 0.15ppm and optimum level is 0.06 mg/L.
Can provide up to 40 tests.

Salifert’s Iodine Additive is highly concentrated and contains a large proportion of iodate and some iodide in the same balance as natural sea water

Magnesium is present in natural sea water in a fairly high concentration (1350 - 1500 mg/L) and is an essential element of chlorophyll which is necessary for photosynthesis. Without photosynthesis plants, algae and coral would not be able to survive. Magnesium also helps to maintain the correct combination of calcium concentration and alkalinity as it slows down the formation of calcium carbonate which can absorb many important trace elements within the aquarium.

Maintaining a correct magnesium concentration is therefore very important and is indirectly responsible for fast coral and calcareous algae growth by making it possible to maintain correct calcium and alkalinity figures. Magnesium is depleted by algae growth and also by the use of excessive kalkwasser or by going far beyond natural calcium, alkalinity and pH values.

The Salifert Magnesium Profi-Test is easy to use and accurate with measurements in steps of 30 mg/L.
Results are not affected by strontium and calcium interference.

Sufficient for 50 tests.
Salifert’s Magnesium Additive is ultra pure and does not upset the balance of the aquarium.



People who bought this item also bought:

Boron is very important in marine environments. Too low a concentration can slow down the growth of corals and calcareous algae, and too high a concentration can result in a build up of boric acid which can act as a bactericide, killing essential bacteria.
Concentration in natural sea water is relatively low, between 4.4 mg/L and 4.8 mg/L.
Monthly boron testing is therefore advisable.
The Salifert Boron Profi-Test kit measures the level of naturally occurring boron in steps of 0.5 mg/L.
Sufficient for up to 25 tests.
Appropriate corrective measures can be taken with Salifert’s Boron Additive.

In a marine aquarium strontium plays an important role in accelerating the growth of coral and calcareous algae and natural sea water contains approx. 7 - 9 mg/L strontium.
Strontium is very difficult to test for, but if there is found to be a depletion of calcium in the aquarium then strontium levels are likely to be very low as well.
It is advisable to maintain a strontium concentration of between 5 and 20 mg/L.
Salifert was the first to introduce a strontium test kit and this test measures both ionically free and moderately complex strontium in increments of 5 mg/L.
Sufficient for up to 40 tests.
For marine use only.
Salifert produce both a Strontium Additive and a Coral Calcium additive for when corrective measures are needed

Silicate occurs in tap water or purified water when the reverse osmosis or de ionising unit is not functioning properly.
Silicate can result in diatom bloom and can block some essential trace elements such as vanadium and molybdenum.
Silicate can be lowered by the use of absoption resin such as Rowa Phos.

The Salifert Test kit for silicate is a very fast, sensitive and accurate test, with two scales: an ultra low scale which is particularly useful for marine water and a high scale which is suitable for freshwater environments.
Sufficient for 60 tests.

The pH value in a marine tank has a major impact on the growth of corals and calcareous algae and on many biological processes. The pH should not be allowed to fluctuate more than approx. 0.2 units during any 24 hour period and should preferably be kept above 8.2.

If the pH is too low then the cause may be a too low alkalinity and/or a build up of carbon dioxide caused by insufficient aeration

A low pH can be corrected by improving aeration and by increasing the alkalinity using a suitable buffer.

The Salifert Test Kit is sufficiently accurate to monitor minor pH fluctuations and is scaled from pH 7.4 - 8.7.

Sufficient for 50 tests. For marine water only