You don't need to test everything every day. You need a schedule that matches how fast each parameter moves and how sensitive your livestock is.
Suggested schedule
| Parameter | New / unstable tank | Stable mature tank |
|---|---|---|
| Alkalinity | Daily | 2–3× per week (or daily if SPS) |
| Salinity | Daily until ATO is trusted | Weekly |
| Temperature | Continuous controller | Continuous controller |
| Calcium | 2–3× per week | Weekly |
| Magnesium | Weekly | Every 2–4 weeks |
| Nitrate | 2× per week | Weekly |
| Phosphate | 2× per week | Weekly |
| pH | Spot check AM/PM | Weekly or continuous probe |
| ICP (trace elements) | After 2–3 months | Every 2–3 months |
Test at the same time of day
Alkalinity and pH drift through the photoperiod as COâ‚‚ and calcification change. Morning readings are a consistent habit. Log results; trends beat single points. Related: alkalinity swings, kit accuracy.
Sources
FAQ
Do softie tanks need this much testing? Less often is fine, but still check salinity, alk and nutrients regularly.
When should I increase testing? After equipment changes, new livestock, dosing changes, or unexplained coral stress.