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aquarists, maintaining a low nitrate level improves the
health of fish and invertebrates.
Testing Tips
This test kit reads total nitrate (NO
per million (ppm) which are equivalent to milligrams
per liter (mg/L) from 0 ppm to 160 ppm, in saltwater
aquariums. This test kit measures nitrate as nitrate ion
or "total nitrate." (Other nitrate test kits that measure
"nitrate-nitrogen" (NO
LESS than this test kit.)
Directions for Testing Nitrate
Read thoroughly before testing. Do not allow test
solutions to get into aquarium.
1. Rinse a clean test tube with the water to be tested.
2. Fill the test tube to the 5 ml line with the water to
be tested.
3. Add 10 drops from Nitrate Test Solution Bottle #1,
holding dropper bottle upside down in a completely
vertical position to assure uniformity of drops
added to the water sample.
4. Cap the test tube and invert tube several times to
mix solution. Do not hold finger over the open end
of the tube, as this may affect test results.
5. Vigorously shake Nitrate Test Solution
Bottle #2 for at least 30 seconds. This step is
extremely important to insure accuracy of
test results.
6. Now add 10 drops from Nitrate Test Solution Bottle
#2, holding dropper bottle upside down in a
completely vertical position to assure uniformity of
drops to the water sample.
7. Cap the test tube and shake vigorously for
one minute. This step is extremely important
) level in parts
–
3
N) will give readings 4.4 times
–
3
to insure accuracy of test results.
8. Wait 5 minutes for the color to develop.
9. Read the test results by matching the color of the
solution against those on the Nitrate Test Color
Chart. The tube should be viewed against the white
area beside the color chart. Color comparisons are
best made in a well-lit area. The closest match
indicates the ppm (mg/L) of nitrate in the water
sample. Rinse the test tube with clean water after
each use.
What The Test Results Mean
In new aquariums the nitrate level will gradually climb
as the biological filter becomes established. Many
marine aquarists prefer to keep nitrate levels as low as
possible, especially when keeping invertebrates.
Frequency of Testing
Regular testing for nitrate is an essential part of routine
aquarium maintenance. Aquarium water should be
tested for nitrate once a week to make sure the nitrate
does not reach an undesirable level.
Reducing Nitrate in Saltwater Aquariums
Partial water changes are the easiest way to lower
the nitrate in a saltwater aquarium.
however, that the biological filter constantly produces
nitrate. Also, because many tap water supplies contain
nitrate, it can be difficult to lower nitrate levels by
this method. API TAP WATER FILTER will remove all
pollutants, including nitrate, from tap water, making
water changes safe and effective.
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Keep in mind,
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