Maracyn (200 mg erthromycin) Treats external, gram-positive infections on fish, such as bacterial fungus, mouth and eye 'fungus', injuries that aren't healing. 5 day treatment at 1 tablet per 10 gallons per day. Will cause some cloudiness by 5th day, it will clear after medication is complete.
Remove carbon less than 7 days old but do not disrupt filtration. Carbon in use more than 7 days does not need removed. Used alone for 5 days, maracyn will not harm a healthy biological filter. If used in conjunction or immediately following the use of other medications, monitor nitrites daily after 2nd day of treatment. Feed sparingly. Add Fritz-Zyme 7 to supplement natural bacteria levels in the biological filter until treatment is completed.

Dosage: To treat fin rot, eye fungus, mouth fungus, external infections on fish: 1 tablet per 10 net gallons of water for 5 days.

To treat red or dark green slime algae in freshwater: 1 tablet per 10 gallons of water for 1 day. If algae returns, do partial water change and remove phosphates with phosphate removing media before retreating.

To treat dark red or dark green slime algae in saltwater: 1 tablet per 55 gallons of water for 1 day. If algae returns, do partial water change and remove phosphates with phosphate removing media before retreating. Allow several days between treatments. (FritzZyme 9 will supplement marine bacteria.)

Fresh Carbon will remove this medicine from the water.

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