I'd leave the skimmer on but have it overflow back into the tank, if possible. That's what I did anyhow. It was basically unable to skim properly anyhow, but I figure the air exchange is still good for something. Often times when there's a large die-off (like from the flukes from the medication - or even say a cyano treatment), there's a large drop in oxygen in the water. So the skimmer helps against that.
Good luck with everything!
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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