THe white spots will start falling off a few days after you notice them. The cyst falls to the bottom of the tank and then after a few more days releases tons more protzoans to infect more fish. So to add to this once the spots fall off the disease is not gone but merely in a dormant stage it will then become freeswimming again and it is at this time that your meds actually work. So once the white spots are gone keep treating until your fish are spot free for at least 10 days.jhelen said:Does anyone know how long it takes for the white spots to fall off after you start treating ich ?
thanks