What causes Ich?

jayguerreso

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Noob question, but what causes the dreaded Ich? I havent encountered it yet, but how do i keep it this way?
 
Ich is a parasite. Quarantine everything before it goes in your tank is the best defense--but there are no guarantees!
 
Ive always made a point to let a fish sit in the store for a while before I even think of buying it. Usually you can tell within a week whether the fish is sick or not. Maybe I should set up a quaranteene for my new angel. Thanks guys!
 
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