I know that catfish farms purge catfish for "off-taste" by placing them in flushout ponds to purge them from the chemical compounds of Geosmin and 2-Methylisoborneol (MIB), which give them a bad taste. They are purged until these compounds are removed and they are "on-flavor" again. I was wondering if I were to take catfish caught from the my local rivers and bayous and place them in my pond, if over time they would be flushed of toxins and metals such as mercury and PCBs???? Since they can be purged of other compounds, can they be purged of toxins and heavy metals? Any input or knowledge would be appreciated. BTW, my pond is free of toxins and dangerous amounts of metals. Thanks!!