25 gallon tank on 5th week. All fish are itchy, 5 damsils, firefish, gruper, clown & octopus. Lots of little white parasites? Treated tank with 2+ ounces of Rally ruby reef for 5 days and parasites are still in full force? What to do?
You have all those animals in a 25, including an octapus? Its a wonder the octapus hasn't eaten most of them.
They likely have ich due to not quarantining fish prior to introducing them to your tank.
Do a search on hyposalinity for info on this procedure, and, also, take a look at the FAQ section which is stickied at the top of this forum.