Lab Mg Plus 2 L — Concentrated Liquid Magnesium for Reef Tanks - Aquaforest

Aquaforest Lab Mg Plus 2 L — concentrated liquid magnesium for reef tanks

The Lab Mg Plus 2 L ships Aquaforest's liquid magnesium solution in the large Lab format. Concentration matches the 250 ml Mg Plus — same effect at equal dosed volume — but with autonomy multiplied by several months. It joins the Aquaforest Lab range alongside Lab Ca Plus 2 L and Lab KH Plus 2 L to make the precise Ca+ / KH+ / Mg+ method.

The wide daily ceiling (100 ml/100 L/day) means Lab Mg Plus can handle both light routine dosing and fast corrections of very low Mg, simplifying management on 100-500 L reef tanks.

Lab Mg Plus positioning

• Lab hobbyist — parameter management to the ppm.
• 100-500 L tanks with steady consumption — 2 L autonomy avoids stock-outs.
• Simple alternative to the Balling trio — targeted Mg dosing without ABC complexity.
• Automated setups — 2 L bottle compatible with doser reservoirs.

Official dosing

• Starting dose: 5 ml per 100 L of tank water per day.
• Effect: 10 ml in 100 L raises Mg by 10 ppm.
• Maximum dose: 100 ml per 100 L per day.
• Max rate: do not raise Mg by more than 100 ppm per 24 h.

Specifications

• Brand: Aquaforest (Poland) — Lab range
• Format: 2 L bottle
• Type: large-format liquid magnesium solution
• Compatibility: 100-500 L reef tanks, all coral types

Why choose Aquaforest at ReefSolution

• Mg Plus 250 ml — the top-up format for nano or corrections.
• Lab Ca Plus 2 L — the concentrated calcium to dose alongside.
• Lab KH Plus 2 L — the alkalinity that completes the Aquaforest Lab trio.

Frequently asked questions

How long does a 2 L bottle last on a 300 L tank?

At the 5 ml/100 L starting dose (15 ml/day on 300 L), the 2 L bottle covers 133 days (about 4.5 months). Under heavier dosing (30 ml/day), duration drops to 66 days.

Does the Mg Plus 2 L match the 250 ml concentration?

Yes — identical formula. Only the packaging changes. The Lab range groups Aquaforest's precise large formats, not different concentrations.

Can I use Mg Plus 2 L on a dosing pump?

Yes — the solution is compatible with all standard dosing pumps. Splitting the dose over 24 h smooths swings but isn't critical for Mg, which tolerates more concentrated single-point dosing well.