kick that ick

[DEAD_BY_DAWN]

after useing garlic mix to help with a ick problem i had many months ago and found it to worked very well i have tried useing it again on my naso tang,but after two weeks of its food being soaked in garlic juice there is still a serious ick problem,it doesnt seem to be bothering him all that much but how long does useing garlic normally work,and is there much else i can do at this point other than removeing the fish from the tank.