Seachem Replenish 500ml


Seachem Replenish 500ml


Available stock: 4

Seachem Replenish 500ml

  • Restore and maintain GH
  • Replenishes necessary minerals removed by RO/DI
  • Necessary to prevent osmotic stress and osmotic shock


Replenish™ is a proprietary blend of salts designed to replenish physiologically relevant minerals that are removed by reverse osmosis or deionizing filtration. Replenish™ restores General Hardness (GH) using a balanced blend of both “soft” (sodium, potassium) and “hard” (calcium, magnesium) salts. Restoration of mineral content is essential since a complete lack of minerals will result in osmotic stress in those species whose osmoregulation systems are adapted to a mineralized environment. Severe osmotic stress can result in osmotic shock which will lead to rapid death.

To restore GH in the planted aquarium, we recommend Equilibrium™.

meq/L Rating
0-1 Soft
1-2 Moderately Soft
2-3 Slightly Hard
3-4 Moderately Hard
4-6 Hard
6+ Very Hard


Add 5 mL (1 capful) Replenish™ to 40 L (10 US gallons) to raise GH by 1 meq/L (2.8 dGH).

Recommended restoration level into DI or RO water is 1-2 meq/L which is 5 mL per each 20-40 L (5-10 US gallons.)


A: We recommend using Replenish™ in a community tank without live plants, as it contains sodium and chloride, which can be harmful to plants. To restore or increase GH in a planted aquarium, use Equilibrium™


Amounts per 1g

Calcium (min) 13.00%
Calcium (max) 14.00%
Magnesium (Min) 1.20%
Potassium (Min) 0.12%
Sodium (Min) 0.60%
Sodium (Max) 0.70%

 Ingredients: calcium chloride, magnesium chloride, sodium chloride, potassium chloride

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