Info: Seachem Equilibrium™ Dosing Instructions

To raise mineral content/general hardness (GH) by 1 meq/L (3 dH), add 16 g (1 tablespoon) for every 80 L (20 US gallons) when setting up an aquarium or when making water changes (add to new water). For optimum solubility we recommend mixing with 1 L (1 qt.) of water (the resulting mixture will have a white opaque appearance). When this mixture is added to the aquarium it will impart a slight haze that should clear within 15–30 minutes. HINTS: Do not use Equilibrium™ when replacing evaporated water. This dose is based on DI or RO water; for other water, measure hardness (GH) first, then add according to need. For precise dosing, use the Seachem Digital Spoon Scale™.

Plant preferences vary, but a general guide is about 1–2 meq/L (3–6 dH) or match the existing or target carbonate hardness (KH), which, ideally, is also about 1–2 meq/L (3–6 dKH). Equilibrium™ will compact with age, but remains effective.


Equilibrium™ Dosing Table 

Water Volume 1 qt / 1 L 1 gal / 4 L 10 gal / 40 L 50 gal / 200 L
Equilibrium™ Dose (g) 0.2 g 0.8 g 8 g 40 g
Equilibrium™ Dose (tbsp / tsp)

1/80 tbsp

3/80 tsp

1/20 tbsp

3/20 tsp

1/2 tbsp

1 1/2 tsp

2 1/2 tbsp

7 1/2 tsp

Resulting rise in hardness 50 ppm    /    3 dH   /    1 meq/L


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