Both ROWAphos and ROWA carbon are useful in maintaining a healty marine fish only aquarium.

Carbon will help to reduce stray organics and help prevent the water from yellowing. It can also be used to remove treatments or chemical contaminants from the water.

ROWAphos is very useful in any aquarium to control algae.

If treating the aquarium with copper or other treatments it is usually recommended to remove carbon and ROWAphos temporarily.