pH

Several times a
week, if not daily.

8.0-8.4
(8.2 is a good
mid point.)

Alkalinity

Several times a
week, if not daily.

2.5-3.5 meq/l

LR Ammonia
(NH³
NH³+4)

Daily during tank
cycling; then once
every 2-3 weeks.

0.0 ppm

Nitrite
(NO²)

Daily during tank
cycling; then once
every 2-3 weeks.

0.0-0.01 ppm

LR Nitrate
(NO³-)

Once per week.
Note: If test is for
Nitrate Nitrogen
(N or NO³-N), multiply reading by 4.4 to get Nitrate (NO³) ionic results.

An immeasurable
amount is optimal!
Less than 0.25 ppm
is strongly
recommended.

Calcium
(Ca)

Once every 1-2
weeks.

400-450 ppm Ca++ Hardness 60-80 ppm

Carbonate
Hardness
(KH)

Once per week.

5.35-6.45 meq/l,
or as 15-18 dKH/
(German °)

Phosphate
PO4

Once per week.

0.05-0.1 ppm

Dissolved
Oxygen
(O²)

Once per week.

7 mg/l saturation
or higher.

Specific
Gravity
(Salinity)

Weekly

1.023-1.025

Temperature

Daily

75°-80°F (24°-27°C),
with 77°F (25°C)
being a good
midpoint.

Other Optional
Reef Tank
Tests

-Iodine/Iodide
-Strontium
-Silicate
-Iron

Refer to individual test kit directions, and below chart
reference resources.