I might disagree.. I had been getting all my fish QT from marine collectors.. and somehow ick showed its ugly head here is my stock list 8 foot tank 30 by 30 in case tang police wanna say something.. oh and they all live peacefullyDoesn’t work AT all biggest waste of money medic .I tried rally and rally ick both and again a waste of money .All my fish have ick .But I feed them omegas,vitamins,garlic,vit c all mixed in Nori (green and red ) sandwich .Both LFS all believe in ick management.Good for there pocket book imo .QT all the way for me now .Setting up a 40 gallon QT .250 gallon a ***** to catch but the egg crate tech looks really good gonna try that . I have another tank I will transfer fish in .Forget going fallow I’m starting over ripping tank apart . Also have a 150 watts of uv which does squat for ick maybe prolongs there life ?
Black tang
Orange shoulder tang
achilles tang
kole tang
Hawaii yellow tang
gem tang
Tahiti hawkfish
wantanabei angel
harlequin tusk
pink clown pair
storm clown pair
mystery wrasse
yellow Coris wrasse x 2
copperband butterfly fish
few mis damsels
we did an auto dose treatment of H202 for 4 months this helped get things under control, turned uv to 24/7 for 3 months and just fed as usual. All fish had a pretty severe outbreak for the first 3 weeks. I now only run uv at night and rarely if ever see any spots. So it is possible and as you can imagine the fish I have ice stands out like a sore thumb on the black and achilles. and yes it was 100 percent ice as seen under a scope.