Yes/no(no dip kills eggs, but if your looking for a catch all dip, Bayer advance soil and turf insecticide is a major favorite among reefers)/yes
More than as a coral dip i see h2o2 used for treating dinoflagelattes (by dosing it straight into the dt)
Haha i know the bayer dip sounds wierd but if you google it, it is really actually very common
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