http://www.petco.com/product/106941...ferralID=1c940966-b269-11e1-9e8b-001b2166c62d.
It's a solution of quinine in formalin. It isn't labeled for anything other than pond use, but I have used it very successfully in tropical FW and SW tanks at 1ml per 5 gal. You need to keep the aeration up while using it, but this product has never failed me. It has the added bonus of being about the safest treatment for fish such as Catfish and Loaches that are sensitive to some meds. I recently cleared an outbreak in a tank that contains a school of Pictus Catfish without removing or losing any of the Catfish. Quinine was a common treatment for ich until the 60s or 70s, and has seen some resurgence due to strains of the ich parasite which have become tolerant of salt, heat, and even copper.
It's a solution of quinine in formalin. It isn't labeled for anything other than pond use, but I have used it very successfully in tropical FW and SW tanks at 1ml per 5 gal. You need to keep the aeration up while using it, but this product has never failed me. It has the added bonus of being about the safest treatment for fish such as Catfish and Loaches that are sensitive to some meds. I recently cleared an outbreak in a tank that contains a school of Pictus Catfish without removing or losing any of the Catfish. Quinine was a common treatment for ich until the 60s or 70s, and has seen some resurgence due to strains of the ich parasite which have become tolerant of salt, heat, and even copper.