Quick Answer
If you keep Neocaridina or Caridina shrimp and want a slow-release source of calcium and magnesium, a Japanese deep sea mineral stone like the ABYSS option is a practical addition—but it's not a substitute for a balanced diet or stable water parameters.
What the Mineral Stone Actually Does
The ABYSS Genuine Japanese Deep Sea Mineral Stone is made from maifan and tourmaline mineral balls. These are considered essential for keeping Neocaridina and Caridina shrimp in parts of Asia because they release beneficial components into the water, such as calcium and magnesium, which shrimp need to stay in optimum condition.
Maifan also carries negatively charged ions similar to montmorillonite, which can help absorb contaminants. That means the stone works in two ways: it adds minerals and helps keep the water cleaner. But it's not a filter—it's a supplement, so you still need your regular filtration and water changes.
Trade-offs to Consider
Mineral stones release their components slowly, which is good for stability but means you won't see an immediate spike in hardness or mineral content. If your water is very soft and your shrimp are struggling to molt, this stone alone may not be enough—you may need a dedicated remineralizer.
Also, because the stone does add minerals, it can gradually raise hardness. In a small tank, this could be a problem if you're trying to keep very sensitive species that prefer soft, acidic water. Monitor your parameters regularly, especially in the first few weeks.
Finally, the stone is not a medication. If your shrimp are sick or dying, adding a mineral stone won't fix the root cause. Check water quality, temperature, and diet first.
Decision Rules for Adding a Mineral Stone
- Shrimp Species: Use for Neocaridina and Caridina shrimp, which benefit from the released calcium and magnesium. Avoid if you keep species that prefer extremely soft water with very low hardness. Check your shrimp species' target hardness before adding the stone.
- Water Parameters: Test your current GH and KH. If they are already in the ideal range, the stone may be unnecessary. If they are low, the stone can help raise them slowly. Measure GH and KH before and after adding the stone to track changes.
- Tank Size: In small tanks, the mineral release can have a bigger impact. Start with a smaller amount or monitor closely. In larger tanks, the effect will be more diluted. Adjust the amount based on tank volume and test weekly.
- Existing Diet and Supplements: The stone is not a substitute for a balanced diet. If you already feed mineral-rich foods or use a remineralizer, the stone may be redundant. Review your current supplementation routine to avoid overdoing it.
Product Facts
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ABYSS Genuine Japanese Deep Sea Mineral Stone 250 grams: The ABYSS Genuine Japanese Deep Sea Mineral Stone contains maifan and tourmaline mineral balls that release beneficial components like calcium and magnesium into the aquarium. These minerals are essential for shrimp health, especially for proper molting and shell development, so this stone helps maintain optimal conditions.
ABYSS Genuine Japanese Deep Sea Mineral Stone 250 grams
Who It's For
Best for
- Shrimp keepers who want a low-maintenance way to add calcium and magnesium
- Aquarists with soft water who need a slow, gentle mineral boost for Neocaridina or Caridina
Not for
- Tanks with already high hardness where extra minerals could cause instability
- Emergency situations where shrimp are sick and need immediate intervention
