The dosage is based on the medication present in the largest tablets, so get one of those and cut about 40% off and use that. Turn air off on skimmer, but leave it running. Also, turn off your lights during treatment, it's photosensitive.
I just dosed my tank, half a tab, ran for 12 hours, then a bunch of carbon and turn the skimmer back on. Check for bugs.
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Brad
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