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API Saltwater Master Liquid Test Kit
API Saltwater Master Liquid Test Kit
Model 401M
Saltwater Master Liquid Test Kit: high range pH (7.4 to 8.8), ammonia (NH3/NH4+), nitrite (NO2-), nitrate (NO3-). Fast, easy and accurate. The Saltwater Master liquid test kit provides information on how to perform each test, how often to perform the tests, what the test results mean, and how to correct any unsafe water conditions that may be detected. This Kit contains:
  • Instructional Booklet Complete
  • Water Resistant Test Solution Bottles for 4 saltwater tests
  • Four glass test tubes with snap-tight caps in holders.

Why test pH? pH is the measure of acidity of water. A pH reading of 7.0 is neutral. A pH higher than 7.0 is alkaline and a pH lower than 7.0 is acidic. Certain freshwater fish thrive at a pH above 7.0. Livebearers, goldfish and African cichlids prefer a pH of 7.5. Marine fish and invertebrates require a pH between 8.2 to 8.4. Maintaining the aquarium at the proper pH ensures optimal water quality.
Testing Tips: This kit measures pH from 7.4 to 8.8 in either fresh or saltwater aquariums. Artificial salt water should have a pH of 8.2. If not, adjustment with API Proper pH 8.2 is recommended. pH adjustment may be required in newly made salt water.

Why test for Ammonia? Tropical fish continually release ammonia (NH3), directly into the aquarium through their gills, urine and solid waste. Uneaten food and other decaying organic matter also add ammonia to the water. A natural mechanism exists that controls ammonia in the aquarium - the biological filter. It is made up of nitrifying bacteria, which live in the gravel bed. However, as with any natural process, imbalances can occur. Testing for the presence of toxic ammonia is essential, so that once detected, steps can be taken to remove it. Otherwise, ammonia in the aquarium will damage gill membranes, and prevent fish from carrying normal respiration. High levels of ammonia quickly lead to fish death. Even trace amounts stress fish, suppressing their immune system and thereby increasing the likelihood of disease outbreaks and subsequent fish loss.
Testing Tips: This salicylate based ammonia test kit reads the total ammonia level in parts per million (ppm) which are equivalent to milligrams per Liter (mg/L) from 0 ppm to 8.0 ppm (mg/L), in either fresh or saltwater aquariums.

Why test for Nitrite? Nitrite (NO2-) is produced in the aquarium by biological filter. Beneficial bacteria in the biological filter convert toxic ammonia into nitrite (also toxic). The biological filter then converts nitrite into nitrate (NO3-). Testing for the presence of toxic nitrite is essential, so that once detected, steps can be taken to remove it. Otherwise, nitrite in the aquarium will prevent fish from carrying on normal respiration. High levels of nitrite quickly lead to fish death. Even trace amounts of nitrite stress fish, suppressing their immune system and, thereby, increase the likelihood of disease and subsequent fish loss.
Testing Tips: This test kit reads total nitrite (NO2-) level in parts per million (ppm) which are equivalent to milligrams per Liter (mg/L) from 0 ppm to 5.0 ppm, in either fresh or saltwater aquariums. Other nitrite test kits that measure "nitrite-nitrogen" (NO2-N) will give readings 3.3 times less than this test kit .

Why test for Nitrate? Nitrate (NO3-) is produced in the aquarium by biological filter. Beneficial bacteria in the biological filter convert toxic ammonia and nitrite into nitrate. A high nitrate level indicates a build-up of fish waste and organic compounds, resulting in poor water quality and contributing to the likelihood of fish disease. Excessive nitrate also provides a nitrogen source that can stimulate algal blooms. In the opinion of many aquarists, maintaining a low nitrate level improves the health of fish and invertebrates.
Testing Tips: This test kit reads total nitrate (NO3-) level in parts per million (ppm) which are equivalent to milligrams per liter (mg/L) from 0 ppm to 160 ppm, in either fresh or saltwater aquariums. This test kit measures nitrate as nitrate ion or "total nitrate." Other nitrate test kits that measure "nitrate-nitrogen" (NO3-N) will give readings 4.4 times less than this test kit.


API Saltwater Master Liquid Test Kit

Internet Price: $39.99   Today's Price: $27.99  (Save 30%)

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  • Saltwater Master Liquid Test Kit: high range pH, ammonia, and nitrate for testing Saltwater and Reef Aquariums

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Model 401M
SKU: 945161

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