I have a bad case of velvet and allready lost several fish and the others are not doing so good. I have read up on different treatments and honestly no one around here has the right stuff. My only selection that was recomended was Mardel Maracyn Plus antibacteria. I chose this option but honestly If it doesnt work fast then all my fish are gone. Does anyone know if this will work or not? I stand to lose everything in a 2 day period if it doesnt.