Fluval Biological Aquarium Cleaner, 4 oz (120 mL) Saltwater Substrate it is the elliptical black

it is the elliptical black spots on the red-brown leaves that have given this plant the name 'Ozelot'

High nitrate levels in your aquarium indicate a build-up of fish waste and organic compounds

Does not collapse once dry

creating ideal bubble size for maximum protein collection

For optimal filtration

Fluval Biological Aquarium Cleaner, 4 oz (120 mL) Saltwater Substrate it is the elliptical blackFluval Biological Aquarium Cleaner helps reduce aquarium maintenance by cleaning gravel, power filters, decorations and interior surfaces. It reduces organic waste due to overfeeding, fish waste and other decaying material such as plant leaves. It is especially beneficial for goldfish, cichlid, and heavily populated aquariums. To further help ensure optimal water quality, use this product with Fluval Biological Enhancer to prevent and control