Seachem pH Alert

pH Alert® is a unique color device designed to be placed in the aquarium or filter and monitor pH continuously. A sensor changes color reversibly from yellow to orange to red alerting you to shifts in pH levels between 5.4 and 8.0. Freshwater use only.

Seachem Ammonia Alert

Ammonia Alert® is an innovative color device for continuously detecting and monitoring toxic free ammonia. A sensor changes reversibly from yellow to green to blue, relative to the ammonia concentration. No test kits, chemicals, or procedures are needed. The device detects less than 0.05 mg/L (ppm) free ammonia and alerts you to the #1 killer before any...

Seachem MultiTest: Ammonia

This kit measures total (NH3 and NH4+) and free ammonia (NH3 only) down to less than 0.05 mg/L and is virtually interference free in marine and fresh water. Free ammonia is the toxic form of ammonia (vs. ionized Ammonia NH4+ which is non-toxic) and thus it is much more important to keep an eye on the level of free ammonia in your system. This kit may be...

Seachem MultiTest: pH & Alkalinity

This test kit features a unique dye that has a pronounced color change between 8.0 and 8.3, making it the easiest kit on the market to read in that critical range. It is suitable for marine or brackish water only. Alkalinity may be read from the same sample in 0.5 meq/L increments. MultiTest™ Marine pH & Alkalinity performs over 75 tests and contains...

Seachem MultiTest Silicate

Natural sea water contains about 10 mg/L as silicate. In reef or other marine aquaria, silicate should be 1 mg/L or less. Silicate is non-toxic to ?sh and invertebrates, but is ideally kept below 1 mg/L to minimize diatomaceous algae. In freshwater, silicate is not critical. Usually, freshwater silicate concentrations will range in the area of 4–20 mg/L.
Salifert Ca Calcium Profitest
  • On sale!

Salifert Ca Calcium Profitest

€9.31 14.59
With the Salifert Profi Test Ca you can determine the Calcium content in seawater exactly and easily. Calcium is a major constituent of calcareous algae, skeletal material of hard corals and the skeletal needles of soft/leather corals. Calcium also fulfills many biological functions. Quite often a too low calcium concentration retards coral and calcareous...
Salifert Mg Magnesium...
  • On sale!

Salifert Mg Magnesium Profitest

€9.66 15.14
With the Salifert Profi Test Mg you can determine the Magnesium content in seawater exactly and easily. Calcium and strontium will not interfere the test, when their total concentration is between 300 and 500 mg/l. This is mostly the case. Natural sea water has a magnesium concentration of approx. 1300 - 1500 mg/l. The concentration varies with salinity....
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