Description
Seachem Replenish 100mL — Compact Liquid (GH) Re-Mineralizer for Aquarium RO Water Supporting Freshwater Fish Osmoregulation & Shrimp Shell Development
Seachem Replenish 100mL (SKU: 725156-1475) is a compact liquid supplement formulated to restore General Hardness (GH) in reverse osmosis (RO) or deionised (DI) water. Purified water lacks the mineral content required to support freshwater fish osmoregulation and shrimp shell development. Replenish supplies essential calcium and magnesium ions needed to establish a stable mineral foundation. Restoring these minerals is vital to prevent osmotic stress and potential osmotic shock, which can be fatal for aquatic species adapted to mineralised environments.
Replenish™ is a specialised salt blend formulated to restore essential minerals removed during reverse osmosis or deionising filtration. The 100mL bottle is sized for small nano tanks, desktop setups, or betta aquariums. It mixes easily into purified water, raising GH without altering pH or adding excess sodium. It effectively replenishes General Hardness (GH) by providing a balanced mix of soft (sodium, potassium) and hard (calcium, magnesium) salts.
Usage & Application
When to Use
- Nano Tank Water Preparation: Re-mineralises small batches of RO water for nano aquariums.
- Freshwater Shrimp Care: Maintains calcium levels required for successful Neocaridina and Caridina shrimp moults.
- Soft Water Adjustment: Elevates GH in excessively soft tap water setups.
Dosing & Administration Guide
- Standard Dosage: Add 5 mL per 40 L of water to increase General Hardness (GH) by 2.8 dGH (1 meq/L).
- Application Method: Mix into RO/DI water in a bucket before introducing it into the aquarium.
- Testing Recommendation: Check GH using a liquid test kit to confirm target hardness levels.
Product Specifications & Highlights
Key Features
- Essential Mineral Blend: Provides bioavailable calcium and magnesium for health and development.
- Sodium Chloride Free: Will not increase sodium concentrations in delicate freshwater setups.
- Instant Dissolution: Blends instantly with purified water, leaving no cloudy residue.
- Compact Size: Sized for nano aquarists and targeted small-volume dosing.
Product Details
- Brand: Seachem
- SKU: 725156-1475
- Barcode (GTIN/UPC): 000116147507
- Product Type: Additives & Supplements > Water Conditioners
- Package Dimensions: 45.43 mm (L) × 45.43 mm (W) × 136.18 mm (H)
- Gross Package Weight: 180 g
- Net Volume: 100 mL
- Target Environment: Freshwater Nano & Invertebrate Aquariums
- Treatment Capacity: 100 mL treats up to 800 Litres (200 US gallons)


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