someone plz help me all my fish in my main tank are flicking or trying as if they got to itch themselves? someone has told me about sterazin is this true some one plz help
Flicking/Flashing is normally a sign of skin irritation (normally caused by Ich/Whitespot). Without knowing what is in the tank it is hard to recommend a good course of treatment but the link below should help.
Fish flicking themselves against rocks and other things is actually a sign of ammonia, generally, sometimes it is a more serious situation like ich or whitespot, however not always.