White spot disspearing period

[bonesb66]

Thanks for the input.

I also believed that it will die if it cannot find a host as this is what i have done before - increased the temperature to stop it breeding and then gradually bought it back down - all was safe and sound.

 

[duanes]

This is from Science News 2009
There are currently no drugs or chemicals that kill Ich while it resides in the fish skin or gills; they can only kill Ich when the parasite is in the water, and therefore all current therapies require a cyclical re-treatment program.

The first major outbreak of Ich in North America was recorded in 1898 at the Chicago World Fair. Ich is a well-known problem for aqua-culturists, aquarium owners, pond owners, hobbyists and retailers of freshwater fish. People and birds can also carry the parasite, unknowingly, from pond to pond