Oyster Shells, Coarse, 200g, Miyagi Prefecture

Oyster Shell, Coarse Grind, Calcium, Bole

For repeat customers, there are special offers. Please let us know in the comments before purchasing if possible. We also have the same item listed on Yahoo! Flea Market.

The coarse grind is oyster shell approximately 4mm-8mm in size. 200g is about 230ml in volume.

The main component of oyster shell is calcium carbonate.
For aquarium filter media and pH adjustment. For calcium and pH adjustment in gardens and potted plants. We've listed it here as we can't think of other uses.

Prices and quantities are as follows. If you need 500g or more, please let us know your desired quantity in the comments. We will adjust the price. We have plenty of stock.
200g: 300 yen
500g: 470 yen
1000g: 720 yen
1500g: 970 yen
2000g: 1170 yen
3000g: 1410 yen
4000g: 1630 yen
5000g: 1830 yen

We can also include samples of fine grind or powder as a trial, so please comment.

Salt has been removed, and the shells have been heated and dried at around 500 degrees Celsius for sterilization.

Ingredients: Oyster Shell (Miyagi Prefecture)
Alkalinity: 50.0%

Nitrogen: 0.2%
Phosphorus: 0.15%
Potassium: 0.03%
Calcium: 94.8%
Magnesium: 0.40%
Silicon: 3.09%
Also contains trace amounts of manganese, boron, zinc, copper, iron, molybdenum, etc.

When used as feed for living organisms, oyster shell has no expiration or best-by date. However, as a precaution, please use within 2 years of opening.