Oyster Shells, Oyster Shell, Oyster Shells, Oyster Shells, Medaka, Goldfish, Carp, Water Purification, Filter Media, Filtration, Filter Material

【Product】
These are oyster shells grown in the rich and nutrient-abundant seas of Hannan.

They are the perfect item for improving water quality for koi, medaka, goldfish, guppies, clownfish, and more, naturally adjusting pH, and providing a habitat for beneficial bacteria.

The seller also uses these for breeding Nishikigoi, medaka, and goldfish.

【Effects】
- Makes difficult overwintering easy by simply adding oyster shells for optimal water quality.
- Promotes growth and reproduction by bringing the water closer to neutral to slightly alkaline (pH approx. 7-9), which is preferred by medaka, goldfish, and shellfish.
- Stabilizes water quality by providing a habitat for bacteria.
- Promotes shell growth for shellfish such as Red Ramshorn snails and Japanese trapdoor snails.

【Listing Details】
- 15+ pieces of non-crushed, sterilized, and cleaned oyster shells.
*Can be placed directly into the aquarium as is.

【Size】
- 5cm-15cm

【Ingredients】
- Domestic oyster shells used.
- Safe to use as these are edible grade oyster shells.

【Usage and Precautions】
- Add 1 piece per 10L of water.
- Can be used without rinsing.
*Recommended to use after a water change or partial water change (to prevent sudden pH increase).

【Hygiene-Conscious Processing Steps】
Thorough heat sterilization
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Careful removal of dirt by hand
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Desalination over several days
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Drying

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Immediate purchases without comments are also welcome?