Fluval Biological Aquarium Cleaner, 4 oz (120 mL) Saltwater Substrate otherwise leave in place until

otherwise leave in place until levels begin to climb again

A patented refiltration system enables you to control water output while increasing dwell time within the filter

If using tap water

Clear-Carb combines the benefits of Carbon and Clearmax for fresh and saltwater aquariums

Fluval Biological Aquarium Cleaner, 4 oz (120 mL) Saltwater Substrate otherwise leave in place untilFluval 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