Seachem PolyGuard is a comprehensive medication designed to treat and safeguard freshwater and marine fish against a wide spectrum of diseases. This powerful formula effectively combats bacterial, fungal, and parasitic infections, making it an essential addition to any aquarium owner's arsenal. It's a good choice for treating a variety of common ailments, even when the specific cause is difficult to pinpoint. Many fish diseases share similar symptoms, such as clamped fins, lesions, and loss of appetite. PolyGuard's broad-spectrum action addresses these issues, offering a reliable solution for maintaining the health and well-being of your aquatic pets. **Key Features:** * Treats bacterial, fungal, and parasitic diseases. * Suitable for freshwater and marine aquariums. * Broad-spectrum medication. * Effective treatment and safeguard against prevalent diseases. Please note that PolyGuard is not recommended for aquariums containing invertebrates, corals, crustaceans, or elasmobranchs (sharks and rays). This medication is specifically formulated for treating diseases in fish within freshwater and marine environments. With Seachem PolyGuard, you can provide your fish with the protection they need to thrive.