thanks angel lady, and everybody else too, I actually wasn't aware that the sharks were scaleless. I read a bunch of sites on them and none of them said this??? If I do use the maracide should I half the dose because of the sharks and the kuhli loach or would a full dose be ok. Will increasing the temp really cure the ich. I thought that just sped up the life cycle and helped the meds to work faster. I have heard that heat and salt will work any experience with this. I'm gonna start treatment this tommorrow morning after a water change so any quick advice would be appreciated.