Seachem Equilibrium 300 gr

To increase the mineral content / total hardness (GH) by 1 meq / L (3 dH), add 16 g (1 tablespoon) for every 80 L (US 20 gallons) when setting up an aquarium or making changes water (add to fresh water). For optimal 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 cause a slight haze that should clear up within 15-30 minutes. TIPS: Do not use Equilibrium ™ when replacing evaporated water. This dose is based on DI or RO water. for other water, first measure the hardness (GH) and then add as needed.
Plant tastes vary, but a general guide is about 1-2 meq / L (3 - 6 dH) or matches the existing or target carbonate hardness (KH), which, ideally, is also about 1-2 meq / L (3 - 6 dKH). Equilibrium ζεται is compressed with age, but remains effective.