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RidIck is a mixture of formalin and malachite green. It will kill filters,
so care must be exercised to remove filtration during treatment or turn off
filters. It is also heavier than water, so without some form of mixing, it
will create high concentrations at the bottom that can kill fish. Formalin
should not be left in the pond, but concentration reduced at about 2 hours
after dosing, by doing a 50% water change. Salt is non-toxic to the
filters, at least in the dosages that you would use to treat fish.
The filter media in the large pond will survive for a few days on the waste
that is already in the pond, but may slow down due to a lack of supply of
food. As soon as treatments have concluded, move some of the fish back, and
monitor ammonia and nitrites.
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RichToyBox
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