Sea bleached and dried oyster shells offered to naturally achieve pH balance in ponds and provide a rough surface for biofilm development.

Pack Size: 15kg (Approximately 11 litres per pack)

Shell size: Generally between 5-7.5cm in length.

Description and Application:
Sea washed and dried natural oyster shells with a calcium carbonate content CaCO₃ in excess of 96% and porosity of 85%.
These shells are the Japanese (Pacific) Oyster which have been used extensively in that country to naturally achieve pH balance in Koi ponds. The rough surface of the shells provides an ideal surface for biofilm development.

Source: Oysters are one of the most widely farmed shellfish in the world - our shells are recycled from established food sources.

Background: Oysters are bivalve molluscs which live by filtering plankton in marine and brackish waters. Many varieties of oyster are prized foods being rich in zinc and other minerals.

Oysters in History: The Kent coast has been noted for its Oyster beds since Roman Times. Not only did the Romans eat the meat but the shells were burnt to form a very effective cement.

As our additional image shows, in the 19th Century oysters were seen as an inexpensive food by the working classes.

Price Promise:
All prices shown include VAT - There are no hidden charges on checkout. This price option applies for personal collection from our Rugeley based depot (WS15 3HF) it does not include delivery.

Colour & Form:
We take great care to provide accurate images, however, as a totally natural product shade variations and irregularities can occur, we consider these add to the fascination of the collection.

Orders placed for personal collection: You will be advised your collection reference by e-mail. For personal collection orders placed by telephone (01 889 580660) our staff will be able to provide an immediate collection reference.

Personal collection is from: Specialist Aggregates, Unit 5 Rydal Estate, Colton Road, Rugeley, Staffs WS15 3HF.

Collection Logistics: Aggregates will be supplied in easy to handle recyclable plastic packaging. Rocks and boulders will be supplied loose. Products will be loaded as appropriate by hand or using mechanical means into customer's vehicles.

Personal collection times: Monday to Friday 10.00 am to 12.30pm - 2.00 pm to 4.30 pm. Price quoted for this item relates to personal collection only. Extra-over charge for collection by customer arranged courier £15.60 per pack (inc VAT).

Order Online Now or Telephone orders Welcome - 9.00am to 5.00pm Monday / Friday