Will bettafix cure fungal infections such as cottony patches?

Bettafix is primarily designed for treating bacterial infections and may not be effective against fungal infections like cottony patches, which are often caused by fungi such as Saprolegnia. For fungal issues, it's typically better to use antifungal treatments specifically formulated for aquariums. Always consult the product instructions and consider seeking advice from an aquarium professional for the best treatment options for your fish.