electric
I recall reading something about how fish can handle a certain amount of electricity.
That does not suggest that there are not exceptions such as cartiligenous fish (sharks and rays), and fish that have an electrical organ such as FW knifefish I believe in the family Morymid? sp?
Anyways, like I stated earlier, maintain good water quality, and you should be through the worst.
Nate
PS I did mean carbon or purigen, or any other chem filtration
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