<a href=showthread.php?s=&postid=11249593#post11249593 target=_blank>Originally posted</a> by vaporize
Despite that funny comment, you should always try to deworm all your fish while they are their first month in quarantine (assuming you have one setup), it is especially helpful when they will be eager to swallow anything (that makes the deworm medication go down easier).
Knowing you from a few of your post, setting up a proper quarantine tank is going to help alot in the long run for your investments (since your purchases are not cheap either).
HTH