Sera Magnesium Reagent 3 Refill Pack
For monitoring magnesium levels in marine aquariums easily and safely.
The magnesium level can be increased with Sera Marin COMPONENT 6 magnesium. Reagent consumption depends on the calcium level of the checked water.
| Specification | Value |
|---|---|
| Reagent Type | Magnesium Testing Reagent |
| Package Size | 3 Refills |
| Usage | Marine Aquarium Water Testing |
FAQ
How often should I use the magnesium reagent?
The frequency depends on your aquarium’s calcium level and water changes. Refer to the test instructions for guidance.
Can this reagent be used with other water testing kits?
Yes, it is designed to work with Sera Marin test kits for magnesium level monitoring.
Is the reagent safe for marine life?
Yes, it is formulated for safe use in marine aquariums and does not harm aquatic life when used as directed.

Alan Murray –
The reagent works reliably and gives clear results. I use it weekly to monitor magnesium levels in my reef tank. It’s easy to follow and matches the test results from my other Sera kits.
Jane Fraser –
Good value for the refill pack. The color change is accurate and consistent. I noticed a slight variation in consumption based on calcium levels, which makes sense according to the instructions.
Lisa Powell –
I’ve been using this for over a month now and it’s proven to be stable and precise. The packaging is compact and the reagent stays fresh for a long time.