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ReefHD Reef Flux Anti-Fungal Treatment (100 gal)


Previously known as Algae Buster, Reef Flux is a fluconazole treatment that is effective against certain fungal fish infections such as Ichthyophonus hoferi and Saprolegnia. It contains no fillers or additives and is lab tested for purity. A notable side-effect of fluconazole is that it is extremely detrimental to bryopsis algae.

To avoid unintended nutrient spikes it should not be used in tanks with Bryopsis or Caulerpa refugiums.

Directions: Turn off skimmer for first 3 days. Activated carbon and phosphate remover can be used after 3 days, but remove other chemical filtration. Empty 1 capsule for every 10 gallons of tank water (20mg per gallon) into high flow area in sump. After 14 days perform a minimum 30% water change. Do not overdose. Filter socks are recommended during treatment in order to help clean the aquarium.

Only for use on ornamental aquariums and fish. Not for human use and not for treating fish intended for human consumption. Keep away from children and animals. In case of accidental overdose, contact a health professional immediately. In case of accidental tank overdose, the medication can be removed using Purigen.

Contents: 10 Capsules

Active Ingredient: Fluconazole 200mg per capsule.

Frequently asked questions:

What is Reef Flux and how does it work?
Reef Flux is a fluconazole-based reef treatment for topical and systemic fungal fish diseases.

Will Reef Flux harm my saltwater fish or invertebrates?
Reef Flux is reef safe for fish and invertebrates as long as it is dosed correctly.

Can Reef Flux affect my nitrates and phosphates?
It is possible that Reef Flux can raise nutrients as it treats your tank, especially if there is a Bryopsis or Caulerpa refugium. This is why it is a good reason to use filter socks while treating fungal fish infections with Reef Flux.

Does this seem like a lot of packaging for 10 capsules?
We received feedback from stores while developing Reef Flux, and many had shoplifting concerns with smaller packaging sizes. Another issue is that for legal reasons there is necessary information on the label that needs to be legible. As a result the packaging size was adjusted to fix any concerns.

Only for use on ornamental aquariums and fish. Not for human use and not for treating fish intended for human consumption. Keep away from children and animals. In case of accidental overdose, contact a health professional immediately.

Livestock Guarantee

All livestock comes with a 10 day Guarantee!

However there are a few simple rules that must be followed:

1. You must follow our acclimation instructions

2. If you had us ship your items to a UPS/Fedex center for pickup, you must pick the package up within 1 hour of the center opening. 

3. Don't delay the delivery of the package in anyway. (wrong address, changing delivery, etc.)

4. Don't remove the frag from the mount. If it falls off during shipping please send us pictures of the item, in the sealed bag, within 1 hour of delivery. 

 If you have a livestock death please contact us via our support page, within 10 days of delivery, with clear non blue, photos of the item in your tank.  We will respond within 24 hours, excluding weekends and holidays. 
Please don't discard the livestock until we approve your refund, as we may need more pictures.   
The guarantee starts when the package is delivered.  Even if the carrier delays your package you will still receive the full 10 day Guarantee. 
We will issue you a refund for any dead livestock once it has been properly submitted and approved.  Shipping fees are non-refundable.
A Little About Our Livestock Pictures

Our pictures are taken under the Zetlight ZP3600 LED. We try to post two pictures of each coral to give you a better idea to how it may look in your tank. We take one picture with all the leds at full power and one picture with just the blue and violet leds at full power. We can't guarantee an exact color match. So many factors, monitor settings, your eyes, and types of lighting affect color, so it is impossible for us to guarantee an exact color match. Our pictures are shot to represent the items as they appear to us in our photo tank. Please see our Lighting example here.

Shipping Policy
Drygood orders are shipped in the order we receive them, usually in 0 to 5 business days (unless otherwise stated).  Livestock orders are shipped the day before the day you selected at checkout so they arrive on the day you selected.  If you didn't select a day we will ship ASAP, usually within 0-3 business days.  
We only ship within the continental United States. We can't ship to PR, HI, or AK, we also can't ship to PO boxes.
Livestock Shipping is $29.99

Saturday Delivery is too risky and not available.
Drygoods ship for Free.


If you want to add to your order please put a note with your order or email us at so we can refund any extra shipping charges. 

We have two pickup options for our local customers.

You can meet us at 3pm Monday or Thursday at the Greencastle Walmart.


Friday at 3pm at the Brazil Walmart.

Please put what day you want to meet in the order notes.  We usually need a day notice.  Time is tight so we will only be at these locations for 10min.  We will be in a Black Tesla Model 3 at the back of the parking lot (Near the road) in the open so we are easy to find.

You can't miss our car!