Gram-Negative Rescue Pack (Fish Flox 500 + Fish Dox 100)
Gram-Negative Rescue Pack (Fish Flox 500 + Fish Dox 100)
Official Dealer. Sealed, factory-direct stock.
In Stock & Ready to Ship
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For ornamental aquarium fish only.
For the stubborn infections amoxicillin does not touch.
Fish Flox (ciprofloxacin) and Fish Dox (doxycycline) are the go-to pair for gram-negative bacteria, the aggressive kind that causes bleeding, ulcers and organ damage. When a fish is bloating, showing red veins or losing tissue, this is the pack you want already in the cabinet.
What's in the pack (2 bottles):
- Fish Flox 500mg, 30 tablets (sold separately at $69.99)
- Fish Dox 100mg, 30 tablets (sold separately at $49.99)
Use it for:
- Red streaks in fins and body (hemorrhagic septicemia)
- Ulcers and open sores that keep growing
- Dropsy-type bloating and pinecone scales
- Aeromonas and Pseudomonas infections
- Mouth rot and gill infections
Why buy the pack:
- Save $19.99 versus buying the 2 bottles separately ($119.98)
- Everything ships together in one box from our US warehouse
- Full-size retail bottles, the same products sold individually on this site
- Sealed bottles with a long shelf life, so the pack keeps until you need it
Not sure which medication your fish needs? Contact us with a photo and a description of the symptoms and we will point you to the right bottle in the pack.
For ornamental and aquarium fish use only. Not for human use. Not for use in fish intended for human consumption. Keep out of reach of children.
- Free US shipping
- Factory sealed
- Mon-Fri support
Intended use & safety
Intended use & safety
This product is sold for use with ornamental aquarium fish only. It is not for human use, not for use in animals raised for food, and not intended for dogs, cats, livestock or any other animal.
Nothing on this page is medical or veterinary advice, and we cannot recommend doses for any animal. If a pet needs treatment, consult a licensed veterinarian who can examine the animal and prescribe appropriately.
Keep out of reach of children and pets. Store in the original sealed container in a cool, dry place away from direct sunlight. Check the lot number and expiry date printed on the packaging before use.
Antibacterial treatments can reduce the nitrifying bacteria that drive your tank's nitrogen cycle. Many aquarists treat in a separate hospital tank, monitor ammonia and nitrite during a course, and plan extra water changes afterwards.
Shipping
Shipping
USPS Ground Advantage is free on every order — no minimum spend. Faster services are available at checkout:
- USPS Ground Advantage — Free · 5 business days
- UPS® Ground — $7.45 · 3-5 business days
- USPS Priority Mail — $11.50 · 2-3 business days
- UPS 3 Day Select® — $11.67 · 3 business days
- UPS 2nd Day Air® — $11.91 · 2 business days
- Express — $34.95 · 1-2 business days
Transit times are in addition to order processing, which takes 1 to 2 business days (Monday to Friday, excluding public holidays). Orders placed before 5:00 PM ET on a business day begin processing the same day.
We ship within the United States only. Tracking is emailed as soon as your order ships.
Returns & refunds
Returns & refunds
Unopened, factory-sealed items can be returned within 30 days of delivery. For safety reasons we cannot accept a return once a seal has been broken, because we cannot verify storage conditions after an item leaves our control.
If your order arrives damaged, incomplete or incorrect, contact us within 7 days of delivery with photographs and your order number and we will replace or refund it at our cost.
Full details are on our Refund Policy page.
