i had 6 goldfish in a 27 gallon (was going to move them into a pond next spring) anyways i was doing a water change on 55 when i spilled some water so i cleaned it up. then more and more water came so i figure i must have broken it when i tripped over it anyhow the goldfish are in a betta...
what size tank do you have? do you have a filter heater ect. plants for them to hide?
you cannot clean the entire tank as this will remove all the good bacteria or the filter and never ever use soap! you can do weekly water changes of 25%. use the ich medicine for 5-6 days as the ich parasite...