first, let me say this is my experience.....i am not recommending this method or any product....just sharing my experience
when i started, as i said in the first post, i ended up losing most of my fish to ich.....i had moved them to a hospital tank and that only made the situation worse....i had a mess on my hands....i was clueless
so, anyways.....i am not a huge fan of hospital tanks, after that experience and i tend not to
QT....so, what do i do when faced with a sick fish
my first battle w/ ich left me 2 fish, my firefish......they were fine for a few weeks...so, i added 2 clowns to the tank....i lost one of the clowns withiin 2 days......he turned white, quit eating and died.....i still do not know what that was caused by......within the next 2 days, my girl, clover, began to show signs of being sick......she had white clumps on her face and head (not ich, large clumps)......i started using ick-attack in the tank......within a few days she was fine
moving on to now, months later:
i have the 110g....i am not QTing.....my little clown, crimson, has a mark on him....i do not believe it is related, but in case it is, here it is.....so, i move him to a hospital tank, thinking it is brook.....i now believe clover bit him......after a few days of observation and no other signs of illness, i move him back to the 110
2 days after that, i notice that clover has white dots on her.....from my previous experience, i believe it is ich....i had just added a new fish to the tank the previous thursday & it looked like ich......i wait a day and watch....it does not clear up....i also note spots on crimson
so, i begin to treat the tank w/ the ick-attack......instead of dosing once a day, i dose twice a day, 12 hrs apart.....i email kordon and asked about the
skimmer......was told to turn it off for 1 hr after dosing.......i have left it off longer, sometimes 24 hrs at a time.......i also hooked up the UV, which i had been putting off.....and upped the vitamins at feedings
at this point, i am one week into the treatment and there is no sign ich anywhere to be seen.......all the fish are eating, active and look great....i will keep dosing for the next 4 or 5 days and watching for any signs of stress or illness
inverts:
no sign of ill effects to any inverts...that is corals (lps, sps, softie), crabs, snails, sea stars, shrimp, clams, sea fan.....no stress what-so-ever
i ws not sure about posting this, as the risk of flames....but we are here to share and hopefully learn along the way....so here it is
here is the link to product info for anyone interested
http://www.kordon.com/kpd77.htm
****i want add that i heard that ich-attack will kill xenia and bubble anemones....i ahve neither in my tank****
USA 
when i heard about your dielemmha, when i had freshwater fish i never had any sort of disease in the tank 
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