I have read through about a thousand posts about treating ich (slight exaggeration) including the 12 page thread on this forum. I am pretty sure I have ich in my new DT. I quaranteened the last fish in (a spotted puffer) and all seemed fine. A couple of days after putting him in DT he got spots and died when I moved him to treat him. A couple of spots on the two other fish developed and disappeared which makes me think its ich thats dormant right now. I plan on moving them to a hospital tank and treat with copper power for 14 days and then ttm them to a second tank (seems to be the perferred treatment by the experts on this site). Since the DT is new and had only those fish and live rock in it I am going to break it down instead of trying to go fallow for months. If I completely dry out the DT, sump and all equipment then fill with fresh water and let it run for a few days will the fresh water kill off any remaining ich of all stages or do I need to clean all the equipment with bleach? Sound like a good plan? Any input positive or negative about my plan would be greatly appreciated. TIA