Help Needed - Sick Fish

>>> Hi Guys,
>>>
>>> I'm after some advice on what I can do for my sick fish.
>>>
>>> A couple of weeks ago my phosphate filter clogged up & blocked all
>>> water
>>> flow at sometime during the night, the next morning my regal blue tang
>>> was
>>> looking pretty sick & I thought it was going to die.
>>> I got the filter cleaned out, did a 50% water change & got every thing
>>> going
>>> again. The tang came good & I thought I was OK.
>>> A couple of days later my flame angel got a cloudy eye which I treated
>>> successfully with a Melafix & Pimafix treatment, it then seemed to get
>>> white
>>> spot, I also noticed my regal blue tang starting to scratch itself on
>>> the
>>> live rock (but couldn't see any white spots) a couple of days later the
>>> white spots came out on its fins so I started a Vertaid (Quinine
>>> Hydrochloride Malachite Green) solution treatment.
>>>
>>> The flame angels cloudy eye has come back (both eyes, but one is worse
>>> than
>>> the other), & almost overnight its front fins look like they have fin
>>> rot,
>>> it's also started to loose colour on the main part of its body (the
>>> orange
>>> around the edges & the purple on its tail are still brilliant colours),
>>> so I
>>> have started the Melafix & Pimafix treatment up again.
>>>
>>> Today my regal blue tang is constantly scratching (more than before) &
>>> has
>>> little lumps on its body that look like pimples. I have been treating
>>> them
>>> with the Vertaid for 4 days now at 1ml per 70 litres.
>>> The flame angle is starting to hide in the caves in the rocks, it still
>>> seems to be eating (a little less than normal) & comes out & swims
>>> around
>>> every now & then.
>>> Other than the flame angel & the regal blue tang, all other fish &
>>> inverts
>>> in the tank seem unaffected.
>>>
>>> The water conditions are all normal & within safe levels, except for a
>>> lot
>>> of very fine particles (almost like dust) floating around, I have seen
>>> them
>>> get sucked into the filter, but they seem to be too fine to be trapped
>>> & end
>>> up back in the tank, ( water changes thin them out a bit).
>>>
>>> My water temp is a stable 25-26 degrees Celsius & I have a 5 level
>>> canister
>>> filter (with the activated carbon removed while medicating) a 8 watt UV
>>> filter & a phosphate filter, the tank is a 155 litre with 28 kg of live
>>> rock.
>>>
>>> What else can I do?
>>>
>>> Regards
>>> Glenn Pritchard.
>>>

>>
>> If they were my fish, I'd put them in a quarantine tank pronto. When
>> you start medicating the entire tank (a tank with live rock/live
>> sand/invertebrates, for instance), you will inevidably run into
>> problems, such as the risk of killing off the natural beneficial
>> bacteria in the tank, and damaging or killing any invertebrates you
>> have. So you need to isolate these fish and then treat them for
>> paracites and fungus (Maracyn is good for treating fungal diseases). It
>> probably wouldn't hurt to also treat them with maracyn Two to prevent
>> secondary infections. Increase aeration during dosage. Do not use
>> activated carbon during treatment. Frequent partial water changes may
>> also be needed to prevent build up of toxic compounds. Then leave them
>> quarantined to make sure any paracites in the main tank, if any, go
>> through their reproductive cyle without the fish as part of that cycle.
>> That way they will die off on their own. This could take up to a month.
>> After sufficient time has expired, and the fish are once again healthy,
>> introduce them back into the tank and watch them carefully for at least
>> a week or two to make sure the paracites don't return. I hope this
>> helps.
>>