So i had a ich issue about a month ago and about two weeks ago i finally got all my fish out but the melanurus wrasse and for the last two weeks i have tried to get the wrasse i have tried fish traps and nothing has worked it always ends up in the sand were i cant find it so i will continue trying to get the wrasse out but my question is if i cant get it out and i am keeping all the fish out tell march will ich be a issue when i put fish back in march can just one wrasse keep the ich issue going were it will be a big issue i am running three uv on the tank right now so on a 200 gallon tank i am running a 15 watt a 36 watt and another 18 watt