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Trimethoprim and Sulfathiazole Sodium (TMP-Sulfa)
A potent combination of medications that's effective in treating both gram-positive and gram-negative bacterial infections. It exerts its anti-microbial effect by blocking two consecutive steps in the biosynthesis of nucleic acids and proteins essential to many bacteria, making it very difficult for bacteria to develop resistance to the medications. TMP-Sulfa may be combined with other sulfa compounds to further increase its efficacy and decrease the chance of resistant strains developing.
TMP-Sulfa will knock your biofilter for a loop, so be sure to use it in the hospital tank only.