Sera Ocher gravel is resistant to carbon dioxide and neutral towards water, meaning it has no effect on water parameters and does not color the water. Thanks to the grain size ranging from 0 - 2 mm, plants can grow excellently. Being round-shaped gravel, the natural gravel is also suitable for breeding bottom-dwelling fish such as catfish.

Sera Ocher gravel has been evaluated according to DIN 38415-6 / EN ISO 15088 standards by an independent institute, and it has been proven to be free of contaminants. Therefore, it is also suitable for breeding sensitive animals.