White spots growing on activated carbon

[takaco]

Is it a sign that my tank have ich ? I'm using grain type of activated carbon, the white spot is like one small dot


No picture taken because I got shocked so I throw all the whole activated carbon away

[Mystikboy]

Ich occurs when there are white spots on fishes, not on the activated carbon. That white spot you saw is probably some residue or something.

[takaco]

Ich occurs when there are white spots on fishes, not on the activated carbon. That white spot you saw is probably some residue or something.

It's not residue

[Mystikboy]

I see. In any case, ich appears on the fish, and not anywhere else

"The symptoms of ich are very evident and usually include characteristic white spots on the body and gills. In some infections, the ich organisms will only be found on the gills. As the disease progresses, the fish will become more irritated and may try to rub or scratch against the sides and bottom of the tank. The disease may then cause respiratory distress, severe agitation, loss of appetite, and eventually death."
- http://www.peteducation.com/article....+2160&aid=2421