Test your water parameters at least once per week, to begin with. Slight changes in some tests are normal but they may indicate a trend and should be noted. Tests should include:
- Temperature
- Salinity
- pH
- Alkalinity
- Ammonia
- Nitrite
- Nitrate
- Phosphate
- Iodine
- Calcium
Record the water test results in your tank log book.
What are the Normal Sea Water (NSW) values? See the Table of Top Major & Minor Elements in NSW.
What are the target water test levels? See the Marine Aquarium Water Quality Target Values.
