Oyster Shell Mix Oyster Shell Calcium Bolé Bolley There are benefits for repeat customers, so please let us know in the comments before purchasing if possible. We are also listing the same item on Yahoo Flea Market. This is a mixture of oyster shells ranging from powder to about 4mm. The powder is about 30-40%, and the 0.5-4mm size is about 60-70%. 150g will measure approximately 150ml. For calcium supplementation for small birds, chickens, etc. For adjusting the acidity of garden soil. Since powder is mixed in, it may be a bit difficult to use as filter media for aquariums. If you want to give it to particularly small birds such as finches, society finches, and parrotlets, and only want small sizes, we can also sift it into powder to 2mm. Please send us a message. Prices and quantities are as follows. If you need more than 200g, please tell us the desired amount in the comments. We will change the price. We have plenty of stock. ●150g: 300 yen ●200g: 330 yen ●300g: 390 yen ●400g: 450 yen ●500g: 500 yen ●750g: 640 yen ●1000g: 760 yen ●1500g: 1000 yen ●2000g: 1260 yen ●3000g: 1700 yen We also sell items by grain size. We can also include samples of coarse, powder, or fine grit as a trial, so please comment. After removing salt, it has been heated and dried at around 500 degrees Celsius and sterilized. The main component of oyster shells is calcium carbonate. Raw materials: Oyster shells (Miyagi Prefecture) Alkalinity: 50.0% Nitrogen: 0.2% Phosphoric acid: 0.15% Potassium: 0.03% Calcium: 94.8% Magnesium: 0.40% Silica: 3.09% Also contains trace amounts of manganese, boron, zinc, copper, iron, molybdenum, etc. When used as feed for living creatures, oyster shells do not have an expiration date or best-by date, but as a precaution, please use them within 2 years of opening.