Salifert Magnesium Profit-Test 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 hel...

Both serious reef aquarists and beginning saltwater hobbyists will find the Salifert nitrate test extremely easy to use. The Salifert nitrate test kit does NOT suffer from amine interference for quick and reliable measurement of Nitrate-Nitrogen. 50 tests. Saltwater aquarium use only.

Salifert Oxygen Profi-Test 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...