Seachem Laboratories NeoPlex Broad Spectrum Antibiotic, 0.4 oz

When your fish are facing an external infection, having the right treatment ready matters, and Seachem Laboratories NeoPlex is made for exactly those moments. This is the 0.4 oz size, a compact amount of a broad spectrum antibiotic that Seachem describes as effective against most external infections in both marine and freshwater fish. That dual coverage means one product can support your saltwater tank and your freshwater tank alike, which is reassuring for keepers with more than one setup.

• A broad spectrum antibiotic that, per Seachem, targets most external infections in both marine and freshwater fish.
• Suitable across saltwater and freshwater tanks, so one bottle can back up multiple systems.
• Used as directed, the brand says it will not discolor your aquarium water.
• Used as directed, the brand says it will not damage your filter bed, helping protect your established biological filtration.
• Well tolerated by invertebrates according to Seachem, though the brand notes delicate species may be stressed.
• The compact 0.4 oz size is easy to keep on hand in your fish first-aid kit for when issues appear.
• Active ingredient is Neomycin Sulfate, with excipients, as listed on the product.
• Designed for measured, as-directed use, so you treat with confidence rather than guesswork.

Fish health issues tend to show up at inconvenient times, which is why a shelf-stable, ready-to-use option like NeoPlex can be such a relief. Because Seachem formulates it to avoid discoloring the water or harming the filter bed when used as directed, you can treat an external infection without throwing your whole tank off balance. Always follow the label directions closely, dose to your specific water volume, and keep an eye on any delicate invertebrates, since the brand cautions they may be stressed. NeoPlex is not a cure-all and is not a substitute for good husbandry or professional guidance for serious cases, but as a broad spectrum antibiotic for external infections in marine and freshwater fish, it is a sensible addition to a prepared fishkeeper's supplies. Keep this 0.4 oz bottle stocked, and you will be ready to respond promptly when your fish need extra support.