RPM Part 3 Magnesium Supplement - Fritz Aquatics

Maintain the delicate balance of your reef’s core elements with Fritz RPM Liquid Magnesium—an essential supplement that supports stable calcium and alkalinity levels. Magnesium acts as a buffer, helping prevent precipitation and ensuring your reef-building corals and inverts can thrive.

Formulated with a precise ratio of high-purity magnesium chloride and magnesium sulfate, this blend mirrors the natural ion balance found in seawater. Ideal for daily or weekly dosing, Fritz RPM Magnesium plays a key role in coral development, coloration, and overall tank stability.

Key Features:

• Pure, balanced magnesium supplement for reef aquariums

• Supports proper calcium and alkalinity balance

• Encourages healthy growth in SPS, LPS, and coralline algae

• No unwanted ions or heavy metals

• Made in the USA

Recommended Range: 1280–1400 ppm magnesium

Adjustment Dosage:

Shake well before use.

• 1 mL raises magnesium by 18 ppm per gallon

• 5 mL (1 tsp) raises 10 gallons by 9 ppm

• Do not exceed 5 mL per 1 gallon daily

Routine Dosing:

Start with 10 mL per 10 gallons daily until magnesium is in range. Once stable, dose as needed to maintain levels based on test results.

Pro Tips:

• Add to a high-flow area or sump for best results

• Cloudiness is normal—allow to clear before dosing calcium or alkalinity

• Use reliable test kits to monitor magnesium

• Caps on 4–16 oz bottles = 5 mL | Cap on 32 oz = 10 mL

• If overdosed, monitor livestock and perform water changes if needed

Ingredients:

Deionized water, Magnesium Chloride, Magnesium Sulfate

Guaranteed Analysis: Magnesium (min) 70,000 ppm

For complete reef stability, use in conjunction with Fritz RPM Part 1 (Alkalinity) and Part 2 (Calcium).