| Brand | DFW Aquarium |
|---|---|
| UPC | 080531440001 |
Check the listing for details. Fritz Maracyn Oxy 4oz. Condition: New. Listed at 12.99 USD. Special note on Mardel Maracyn® Oxy: Mardel Maracyn® Oxy has been shown to be effective against certain gram-negative and gram-positive bacteria. It slowly releases small amounts of a stabilized oxygen-chlorine combination which, when used as directed, has an unusual ability to treat a wide variety of tropical fish diseases.