Component 3in1 — Aquaforest's all-in-one Balling

Component 3in1 is Aquaforest's simplified Balling formula: a single solution combining highly concentrated calcium, KH, magnesium and trace elements, in proportions aligned with corals' needs. Available in 500 ml, 1,000 ml and 2,000 ml — pick your size right on this page.

Each liter of 3in1 delivers 40,000 mg of Ca, 1,900 mg of Mg and 5,800° KH per the official sheet. At the starting dose of 5 ml/100 L, Aquaforest quantifies the effect at roughly +2 mg/L of calcium and +0.095 mg/L of magnesium — a useful order of magnitude when planning a dose increase.

Which tanks 3in1 is for

Established 100-300 L reef tanks — a stable Balling routine with predictable consumption.
Reefers who want fewer manipulations — one bottle instead of the A/B/C trio.
LPS tanks with steady growth — a regular dose without frequent adjustments.
Soft corals and mixed reefs — macro + trace element balance in one motion.

Which size: 500 ml, 1 L or 2 L?

The 500 ml to try the method or for a nano; the 1 L for a mid-size tank in routine; the 2 L costs the least per liter — the pick for an established tank with regular consumption, with months of autonomy.

Official dosage

Starting dose: 5 ml per 100 L of tank water per day.
Maximum dose: 25 ml per 100 L per day.
Effect quantified by Aquaforest: 5 ml in 100 L ≈ +2 mg/L of calcium and +0.095 mg/L of magnesium.
Monitoring: watch the KH level and increase the dose if needed; wait at least 5 h after dosing for reliable Ca and KH tests.
Adjustment: in 1-2 ml per 100 L steps, week by week.

Good to know

3in1 contains organic calcium salts: it also acts as a carbon source in the marine aquarium and may indirectly contribute to lowering nutrients (NO3 and PO4) — Aquaforest recommends monitoring these parameters regularly. Safety (calcium diformate): causes serious eye damage — wear protective gloves and eye protection, keep out of the reach of children; product for aquarium use only.

Specifications

Brand: Aquaforest (Poland)
Sizes: 500 ml, 1,000 ml and 2,000 ml
Type: single solution of Ca + KH + Mg + trace elements
Suited for: stabilized reef tanks, LPS, soft corals, mixed reefs

Why choose Aquaforest at ReefSolution

Components 1+2+3+ 3×5 L — the switch to the classic three-part Balling once consumption exceeds 25 ml/100 L/day.
Magnesium Test Pro — the Mg test to run periodically to confirm 3in1 is holding magnesium over time.

Frequently asked questions

How long does a 2 L bottle last on a 200 L tank?

At the starting dose of 5 ml/100 L (10 ml/day on 200 L), the 2 L bottle covers 200 days (about 6.5 months). At an intermediate dose of 15 ml/100 L (30 ml/day), it lasts about 66 days — and the 1 L, half of that.

Does 3in1 replace classic three-bottle Balling?

For a tank with moderate consumption, yes — that's exactly its role: the three elements in fixed proportions, one bottle. Once consumption exceeds the maximum dose of 25 ml/100 L/day, Aquaforest points to the 1+2+3+ trio, which lets you adjust each element separately.

Can I store the 2 L bottle for a long time once opened?

Yes — the contents are stable at room temperature, away from direct light and tightly capped. Aquaforest doesn't publish a use-by window after opening, but 6-8 months of use hasn't shown issues on the tanks we follow.