(International Buyers Please Scroll to Bottom)

Price per mg is cheaper than Reef Flux and Flucon.


Fluconazole is used to treat fish with fungus conditions and to eradicate nuisance marine algae.  Fluconazole affects the fungus by blocking the fungi’s ability to produce ergosterol.  Ergosterol is one of the enzymes crucial to supporting the integrity of the fungi cell walls.  With the production of ergosterol blocked it causes the fungi to wither away at a cellular level.  Most green marine algae also use ergosterol to support their cell walls, and as with fungi once the ergosterol is blocked it causes the algae to wither away at a cellular level.

Contact us for custom orders and we can setup a special auction to meet your needs.

Orders received after 12:00 PM PST will ship the following business day.

Please pay special attention to the “Treatment Against All Other Algae” section if you are dealing with an alga other than Bryopsis.


Warnings: For aquarium and ornamental fish only.

All the ingredients are pharmaceutical grade quality…NOT for human use.  Even though many medications used in the pet industry are also used in medical fields, NEVER use medication intended for pet use to treat human conditions.  This product should not be given to fish intended for human consumption.  Keep out of the reach of children and animals.  In case of accidental ingestion contact a health professional or poison control at once.


Store in a cool, dry place.


Aquarium Treatment for Fish Fungus

Add 100 mg of Fluconazole powder into aquarium for every 5 gallons of water you are treating.  Repeat every 24 hours for 5 consecutive days.


Hospital Tank: Add 100 mg for every gallon.  Add fish to hospital tank for 1 hour daily and repeat for 6 days.


Aquarium Treatment for Algae

Simple algae like Bryopsis will react within a few days to a Fluconazole treatment of 20mg per gallon of aquarium volume.  More advanced algae such as GHA (green hair algae), Caulerpa, Valonia, Chaetomorpha, Ulva, and some red and brown algae will take longer to react, and some will not react at all.  It depends on whether the algae species in question utilizes ergosterol and at what concentration.  Some algae species use multiple sterols such as Chaetomorpha aurora that includes three sterols, methylenecholesterol, cholesterol and ethylcholesterol, with methylenecholesterol being the primary sterol.


Turn off all protein skimmers during treatment…this would be a good time to remove and clean them.  Remove and sterilize algae scrubbers and leave them out for the duration of treatment.  It is fine to continue running GFO however remove any aluminum-oxide based phosphate removes such as PhosGuard.  Remove Purigen and any carbon.


Treatment Against Bryopsis

The recommended treatment is 20mg per gallon of aquarium volume, i.e. 1000mg for a 50g tank, 2400mg for a 120g tank.  Treatment duration is 14-21 days.  


If after 14-21 days, the algae are under control perform a 15%-20% water change and resume normal maintenance activity.  If you have serious concerns about your livestock, you can perform water changes as normal based upon your maintenance schedule just make sure that the new water has a Fluconazole level of 20mg per gallon.


Treatment Against All Other Algae

Simple algae such as Bryopsis will be affected quickly, while more complex algae can take a month or two...if not longer.  Although a more complex algae may not be eradicated in just a few days, the Fluconazole will still affect the growth.  It is vital to break the equilibrium between the cell loss caused by the Fluconazole and the algae’s ability to produce new cells.  Things such as reduced lighting, reducing food/fish waste will help combat an algae’s growth ability.  Multiple treatments may be needed.


The recommended treatment is 20mg per gallon of aquarium volume, i.e. 1000mg for a 50g tank, 2400mg for a 120g tank.  Initial treatment duration is 21 days.  After 21 days perform a 20% water change. 


If the nuisance algae have been eradicated resume all normal maintenance activities.  If the nuisance algae are still present, treat with Fluconazole a second time at 20mg per gallon and watch for another 21 days.  Continue doing the 21-day cycle until the nuisance algae is gone.


NOTE: People have been successfully treating with dosages as high as 40mg and 60mg per gallon, at these dosages it will certainly have a greater impact upon the algae.  However, we do not recommend concentrations that high unless it is the last resort, and you are doing so at your own peril.


Long Term Maintenance

Once the algae are under control it is time to look at long term maintenance.  Continue doing regular water changes and keep a Fluconazole ratio in the water at 5mg per gallon.  This concentration should not allow new algae to get a foothold, and after a few months if 5mg is working then lower it to 3mg per gallon and plan to keep it there permanently.


Dosing via Weight or Volume

The most accurate way to dose Fluconazole is by weight.  It is easy to weigh the required dosage on a small digital scale.


The second way is by volume, which requires measuring spoons.  We took ten 1/8 teaspoons unpacked and leveled.  The average of 10 scoops was 285mg.  We used this average to create the following volume scale.

1/32 tsp = 71.25mg

1/16 tsp = 142.5mg

1/8 tsp = 285mg

1/4 tsp = 570mg

1/2 tsp = 1140mg

1 tsp = 2280mg

An example for using the scale.  Your aquarium is 120g, which calls for 2400mg of Fluconazole.  Just get to the closest measurement over 2400mg.  1tsp = 2280mg + 1/6 tsp 142.5mg = 2422.5mg.


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International Customers


Shipping & Customs: You, the Buyer, are 100% responsible for any additional shipping or customs/import/local related fees and charges. 


International Importation Legalities: You, the buyer, are 100% responsible for making sure that it is legal to import this product into your Country and Locality.  Any seizures during importation are solely you, the Buyer's, responsibility if the shipment is stopped and/or seized for any reason. 


Welch-Daniels Due Diligence: Upon receiving an international order, we will try to verify the legality within your "shipped to" country and any order we flag as questionable will be canceled and the payment(s) refunded.


No restrictions on shipping to the EU or UK.

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Shipping


Domestic:  Free shipping is via USPS First Class Package, which includes a tracking number. 


International:  All orders will ship will via USPS International First-Class Package, which includes a tracking number unless you chose a different service level.  However, the tracking history accuracy is fully dependent upon the country it is being shipped to.