once again casey i am no expert but a fw dip can work but you have to get the ph the same as your tank and watch the fish very closely for signs of stress. i think it will take about 10 to 15 min to get the parasite to drop off the fish and then you cant pour that water into the tank. also from what i read in your other post you probably have a tank that is riddled with ich so if you put him back hell just get it agin. i think hypo would work better and then if you can keep him out for i think its about 4 weeks your ich in the main tank will die, because there will be no fish host in tank. i cant help you with hypo because ive never done it. good luck