Chemistry
Precision reagent for reliable dKH testing
Nereus Alkalinity Reagent is formulated for the Nereus Alkalinity Checker and compatible colorimetric alkalinity workflows. Consistent strength means the reading you log today is comparable to the one you logged last week — which is what trend charts on the dashboard actually need.
Alkalinity is one of the most important parameters in a reef. Small drifts show up in coral growth and colour long before a casual glance at the tank does. A stable reagent removes one more variable from the test so you can trust the number and act with confidence.
Why reefers choose it
- Matched chemistry for the Nereus Alkalinity Checker
- Ready-to-use liquid — no mixing powders for each test
- Stable formulation for repeatable titration / colorimetric endpoints
- Supports long-term alkalinity trends in the Nereus dashboard
- Clean, international product presentation for serious aquariums
How to use
- Follow the Alkalinity Checker instructions for sample volume and reagent additions.
- Use clean vials and rinse with RODI between tests so residual reagent does not skew the next sample.
- Add reagent steadily to the endpoint described in your checker workflow — do not rush past the colour change.
- Log the result in the Nereus dashboard (or let the checker sync, if your setup supports it) so history stays continuous.
- Recap the bottle immediately after use to protect concentration and shelf life.
Best practice
- Store cool, upright and sealed — avoid prolonged heat and direct sunlight.
- Do not dilute or top up with other brands’ reagents; keep chemistry matched to the checker.
- Discard reagent that has changed colour, precipitated unusually, or passed its usable life.
- Test on a regular schedule (many reefers check alk several times per week on SPS systems) rather than only when something looks wrong.
Paired with the Nereus Alkalinity Checker, this reagent turns a routine test into a dependable data point — the foundation of stable reef chemistry.