whats ich

[louny]

someone said my tank may have it . yellow tang has this white stuff on fins and starting to fade. whats the cure?

 

[beth]

Hyposalinity. Do you have a FO tank or a QT?
Ich is a highly contagious parasitic disease; meaning that if one fish has it, the rest of the fish in the same tank as that fish are exposed and likely infected too. All fish must be treated.
Do a search on hyposalinity here. There is tons of info.