Remineralizing RO water: GH+, GH/KH+ and dosing
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Choose the mineral product for your species, substrate and intended GH and KH. GH+ and GH/KH+ are product categories, not standardized recipes. A soft-water bee setup often needs GH without much KH. A Neocaridina setup on inert substrate may need both. Sulawesi requires a recipe chosen for the actual species.
Prepare the water outside the tank
- Measure the actual replacement-water volume in a clean bucket.
- Read your product label. Weigh the calculated amount and follow its dissolving instructions.
- Measure GH and KH in the prepared water. Check temperature. Use TDS or conductivity as an additional consistency check.
- Record product, grams, litres and results. Add water in a controlled way; do not sprinkle dry powder among the animals.
A calculation example, not a universal recipe
SaltyShrimp specifies approximately 3 g per 20 litres for Bee Shrimp Mineral GH+, targeting about 6 °dGH. For 5 litres, the proportional amount is 0.75 g. Shrimp Mineral GH/KH+ has a different label: approximately 2 g per 10 litres, also targeting about 6 °dGH, but raising KH too. Equal GH does not make the products interchangeable. Check the current label and measured result.
Use this recipe for aquarium water that was removed. When only evaporation occurred, minerals remained behind and plain RO normally belongs in the top-up. Extra minerals do not treat an ammonia problem or unexplained deaths.
Sources and scope
Measurement and preparation principles come from the cited sources. The investigation sequence is an editorial judgement. Fish farming, drinking-water or livestock figures are not established safe limits or treatments for dwarf shrimp. Product instructions apply to the named product.
