If anyone has read my mystery fish death post i was wondering why 4 chromis would die in 1 day after being happy being cycled with the tank with atm colony for a month then suddenly die in same day leaving me only 2 left and after today only 1 left but after examining the recently dead chromis with a magnifying glass spotting some really tiny black dots all down the spine all in tail all under its jaw and between eyes could this be black ick? how long would it sit docile for Before killing fish? only thing that was added was blue cheek goby like a week prior to the 4 dying (all from same lfs) if it is black ick is there was definitive way to tell before I go dosing the tank with meds and doing more harm than good also what treatments are available for the whole tank (no corals yet but will be having some later down the road) ideally I just want to treat the DT and not qt the fish and sterilise the whole tank and start again