Seachem Onyx Sand Size:7kg Premium Activated Carbon 500g

Premium Activated Carbon 500g

Pump unit (motor) and power cord

Over the course of several hours

For freshwater and marine environments

12 month warranty (conditions apply)

Seachem Onyx Sand Size:7kg Premium Activated Carbon 500gDescription Onyx Sand is a naturally dark gray sand that perfectly complements and enhances the appearance of any aquarium. It provides not only iron and other minerals but supports optimal KH levels for freshwater planted aquariums. Being carbonate rich, Onyx Sand provides an advantage to any plants able to utilize bicarbonates. Although ideally suited to planted aquaria, it may be used in any aquarium environment. Onyx Sand is most effective when