I would very serously advice to avoid feeders , now that the mfk pellets are out make a few diferent batches with various ingredients.
And if you must feed feeders , get fingerlings from a aquaculture tilapia farm. These are bred in sterile conditions and not very expensive over the lfs feeders.
I once had a fw tilapia survive to adulthood and thier prolific breeding kept a steady supply of feeders for my other fish. Kinda very natural thing if you think about it.
As for the balance feeders, fix them with medication just as you would care for any other fish and if they survive , make a nice lil indoor pond water feature and dump em in it.
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