In my experience the best way to treat freshwater ich is to have carbon in a filter for a tank 5 times the size of yours and use 5 times the recommended medication and if you have prime dose at what it says for your tank every other time you treat it, and use salt with 1 tablespoon per 5 gallons. In my Quarantine tanks i get ich weekly (i don't use heaters in quarantine tanks) and i will treat african cichlids 50 fish ranging from an inch to 8 inches in a 40 gallon tank at 68 degrees F. in a week and a half. I did not do a water change for that week and a half until the ich was gone and then did a 80% water change.
I have done this on plecos, rams, african cichlids, pseudoplatystoma corruscans, frontosa, oscars, geophagus, raphiel cats, iridescent sharks, and more (totaled up to about 70 fish that i have treated this way) i can't remember because this is normal when you Quarantine fish and have NEVER LOST ONE FISH.
The key lies at the biological bacteria being killed with medications and too much salt, but the carbon makes the water safe for the biological bacteria. So when you do this you will keep your tank cycled and treat the ich, and not loose any fish. This sounds too good to bet true but its not. A great way to test this is to buy a goldfish for 20 cents with ich. Try this when the tank is cycled and it will work.
I have done this on plecos, rams, african cichlids, pseudoplatystoma corruscans, frontosa, oscars, geophagus, raphiel cats, iridescent sharks, and more (totaled up to about 70 fish that i have treated this way) i can't remember because this is normal when you Quarantine fish and have NEVER LOST ONE FISH.
The key lies at the biological bacteria being killed with medications and too much salt, but the carbon makes the water safe for the biological bacteria. So when you do this you will keep your tank cycled and treat the ich, and not loose any fish. This sounds too good to bet true but its not. A great way to test this is to buy a goldfish for 20 cents with ich. Try this when the tank is cycled and it will work.