Pond Filter Media » Japanese Oyster Shells

Japanese Crushed Oyster Shells

Crushed Oyster Shells Medium Pieces - grade pieces approx 15mm-25mm.

This is an alternative to the full size Oyster shell, but in a crushed format, giving large surface areas of contact to the water flow.

These are genuine Pacific Oyster shells which are a superb method to buffer and maintain a constant pH to your Koi pond.

Filter media bags are available to retain the shell, which can then be ready for total immersion into the filter.

This is exactly the same media that 9 out of 10 Japanese breeders keep in their filtration systems.

Supplied in a 20kg plastic bag

Japanese Oyster Shells Halves

These are large Pacific Oyster shells and are a superb method to buffer and maintain a constant pH to your Koi pond.

This comes supplied with a nylon sack ready for total immersion into the filter.

This is exactly the same media that 9 out of 10 Japanese breeders keep in their filtration systems