Dosing Elements
Alkalinity reef supplement for automated dosing
Nereus Alkalinity Supplement is a high-purity reef supplement (sodium carbonate) for two-part and soda-based alkalinity dosing. Dissolve it into a pump-friendly stock solution and deliver it on a schedule with the Nereus Dual-Head Doser so dKH stays smooth instead of swinging with manual dumps.
Stable alkalinity is the backbone of coral calcification in a reef aquarium. When alk drifts, calcium uptake, growth tips and colour follow. A consistent reef alkalinity supplement lets you match daily consumption without chasing the test kit every evening.
Why reefers choose this reef supplement
- High-purity alkalinity source suited to SPS and mixed reefs
- Dissolves cleanly for reliable peristaltic dosing
- Designed to pair with Nereus Calcium and Magnesium reef supplements
- Supports steady dKH trends you can watch on the dashboard
- International-quality packaging for serious aquarium systems
How to use
- Mix according to your preferred recipe (two-part or soda ash style) using RODI water in a clean container.
- Stir or shake until fully dissolved — cloudy undissolved powder can clog doser lines.
- Fill a dedicated dosing reservoir and label it clearly (never swap alk and calcium lines).
- Start with a conservative daily volume, then adjust from regular alkalinity tests until consumption is matched.
- Automate with the Dual-Head Doser — split the daily volume across the day for more stable reef chemistry.
Best practice
- Raise alkalinity slowly on sensitive systems; large jumps stress corals.
- Keep alkalinity and calcium dosing balanced — rising one while ignoring the other creates ionic drift.
- Test several times per week on high-demand SPS tanks; log results so trends stay visible.
- Store the powder sealed and dry; keep mixed solutions away from heat and sunlight.
Used with the Nereus doser and checker workflow, this alkalinity reef supplement turns dKH control from a weekly scramble into a repeatable part of reef husbandry.