Tropic Marin Original Balling Refill Set

The Tropic Marin Original Balling Refill Set provides all three salt‑mixture powders (Parts A, B, and C) needed for the classic “Balling method” of calcium and alkalinity dosing in reef aquariums. Each powder dissolves in 5 L of RO/DI water (no weighing required), producing stable liquid solutions that can be added directly or dosed automatically. Part A supplies calcium (as calcium chloride‑dihydrate), Part B adds alkalinity (as sodium carbonate/bicarbonate), and Part C — a sodium‑chloride‑free sea salt blend — restores magnesium, potassium and other essential ions to preserve ionic balance.

Using the three‑part dosing maintains stable water chemistry — avoiding pH swings and imbalances often associated with simpler two‑part dosing— and supports optimal growth of corals, coralline algae and other reef dwellers.

Daily dosing is simple: dissolve each mixture, then add equal volumes of solutions A, B, and C to the aquarium (don’t mix them together before dosing). A common dose, for example, is 50 mL of each solution per 100 L of aquarium water — raising calcium by about 10 mg/L and alkalinity by around 1.4 °dH.