+1 on tank/bucket transfer. It's pretty easy but not fool proof.
I just had an outbreak of ich. I must have screwed up somewhere and contaminated the clean water somehow. It was quite virulent. From 1st signs, it took 5 days to wipe out almost all my fish.
2 Picassos, Coral Beauty, Exquiste wrasse, Midas, and a few others.
Now I'm supposed to leave my tank fallow for 72days but I can't catch my Melanarus. I've taken every rock out and into dry buckets, stirred up all the sand but no wrasse. He magically reappeared the next day.
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