SulfaPlex is a powerful medication designed to combat various types of infections in saltwater aquariums, including parasitic, fungal, and bacterial issues. It works by introducing sulfathiazole, the active ingredient at a concentration of 69%, which effectively targets these pathogens without harming beneficial bacteria or disrupting biological filtration processes. When using SulfaPlex, it's crucial to follow the specific dosing instructions carefully: remove sensitive invertebrates from the tank and ensure all chemical filters are bypassed during treatment.