Fritz RPM Elements Liquid Magnesium 32oz
Fritz RPM Elements contain the essential building-blocks of reef keeping. Developed to easily adjust and maintain proper parameters, promoting healthier coral, coralline algae, and invertebrates. It is impossible to maintain a healthy, vibrant reef aquarium without maintaining proper levels of calcium, alkalinity, and magnesium. FRITZ RPM Elements allows aquarists to maintain these critical components in their proper ionic balance. Unlike other similar products, Fritz RPM Elements do not contain unmeasured and unnecessary ions and metals, which unchecked can lead to toxicity in the aquarium. When used in conjunction with regular water changes using a high quality salt, like FRITZ RPM (Reef Pro Mix), RPM Elements will ensure the correct parameters for a healthy and beautiful reef aquarium.
Key Components
| Component | Concentration |
|---|---|
| Magnesium | 1250 ppm |
| Calcium | 400 ppm |
| Alkalinity | 8 dKH |
FAQ
How often should I add Fritz RPM Elements to my reef tank?
Add Fritz RPM Elements every 4 to 6 weeks depending on water changes and biological activity in your tank.
Can I use Fritz RPM Elements with other reef supplements?
Yes, it is recommended to use Fritz RPM Elements in conjunction with a high-quality reef salt mix such as FRITZ RPM (Reef Pro Mix) for optimal results.
Is Fritz RPM Elements safe for sensitive invertebrates?
Yes, because it contains no unmeasured ions or metals, it is formulated to avoid toxicity and is safe for sensitive invertebrates.

Alexandra Abraham –
I’ve been using Fritz RPM Elements for three months now and my coral growth has improved noticeably. The magnesium levels stay stable and my tank feels more balanced. No signs of toxicity or algae blooms. Highly recommend for reef keepers who want reliable, clean chemistry.
Kimberly Lyman –
The product works well with my existing salt mix. I added it every 6 weeks and my alkalinity has remained steady. It’s easier to manage than other magnesium supplements I tried before.
Audrey Mitchell –
My coralline algae has thrived since switching to Fritz RPM Elements. The calcium and magnesium balance is perfect. No need to adjust other parameters. Simple and effective.