Lab KH Plus 2 L — Concentrated KH Solution in a 2 Litre Format - Aquaforest

Aquaforest Lab KH Plus 2 L — concentrated KH solution in a 2-liter format

The Lab KH Plus 2 L ships Aquaforest's concentrated liquid alkalinity solution in the large Lab format. Recipe optimized for established reef tanks with sustained consumption — the same dKH effect at lower dosed volume, and autonomy multiplied by several months versus the 250 ml. Part of the Aquaforest Lab range, it fits the precise Ca+ / KH+ / Mg+ method paired with Lab Ca Plus 2 L and Lab Mg Plus 2 L.

Like all liquid KH solutions, Lab KH Plus imposes a strict daily cap and a max correction speed of 0.5 dKH per 24 h to preserve carbonate stability.

Lab KH Plus positioning

• Precise hobbyist — parameter management to the tenth of a dKH.
• 100-500 L tanks with steady consumption — 2 L autonomy avoids stock-outs.
• Balling alternative — targeted KH dosing without the ABC trio complexity.
• Automated setups with dosing pump — 2 L bottle fits doser reservoirs.

Official dosing

• Starting dose: 5 ml per 100 L of tank water per day.
• Effect: 10 ml in 100 L raises alkalinity by about 0.5 dKH.
• Maximum dose: 10 ml per 100 L per day.
• Max rate: never more than 0.5 dKH lifted per 24 h.
• Caution: add in a high-flow area.

Specifications

• Brand: Aquaforest (Poland) — Lab range
• Format: 2 L bottle
• Type: large-format liquid alkalinity solution
• Compatibility: 100-500 L SPS and LPS reef tanks, automated setups

Why choose Aquaforest at ReefSolution

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

Frequently asked questions

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

At 5 ml/100 L (15 ml/day on 300 L), the 2 L bottle covers 133 days (about 4.5 months). At the 10 ml/100 L max (30 ml/day), duration drops to 66 days.

Is the KH Plus 2 L more concentrated than the 250 ml?

No — concentration is identical. Only the packaging changes. The "Lab" label signals membership in Aquaforest's precision large-format range, not a different concentration.

Can I run it on a dosing pump?

Yes — the solution works perfectly with standard dosing pumps. Aquaforest recommends spreading the daily dose over 24 h (for example 4 doses of 3.75 ml on a 300 L reef at 15 ml/day) to smooth alkalinity swings.