Aquaforest Mg Plus 250mL

Aquaforest Mg Plus is a concentrated liquid magnesium solution that raises your reef tank's magnesium (Mg) level without increasing the concentration of other elements. Proper magnesium is the foundation that keeps calcium and alkalinity stable, so corals, clams, and coralline algae can build strong skeletons. Mg Plus lets you correct shortages quickly and precisely. Explore the full Aquaforest line at Squeaky's Aquatics.

Benefits

• Raises magnesium without affecting calcium, alkalinity, or other parameters.
• Stabilizes the big three by keeping Mg in the proper range.
• Concentrated and precise for accurate dosing.
• Pairs with Ca Plus and KH Plus for complete reef balance.

How to Use

Test your magnesium first, then dose Mg Plus gradually to reach your target level, following the Aquaforest dosing guidelines. Magnesium changes slowly, so retest after dosing and adjust over a few days rather than all at once.

Specifications

Recommended Pairings

• Ca Plus and KH Plus to balance the reef big three
• Aquaforest Magnesium Test Kit and more water testing kits
• Browse the full Aquaforest line

Frequently Asked Questions

What is the ideal magnesium level?
Most reef tanks target roughly 1300 to 1400 ppm magnesium, close to natural seawater, and keep it stable.

Why does magnesium matter?
Magnesium keeps calcium and alkalinity in balance. If it drifts low, it becomes hard to hold steady calcium and alkalinity.

How often should I dose?
Magnesium is consumed slowly, so test weekly and top up as needed rather than dosing daily.