The USA has more freshwater bi-valves, (Clams, mussels) than any place on Earth. Many in our creeks, streams etc. are needed. And are first to be studied and counted and kept an eye on for changes or toxins in the water. Other bi-valves create havoc and were brought over accidentally or released into waters. Similar problems England has by having the American Crayfish explosion in their streams. Anyway, I've thought about adding a few clams to one or more tanks. Has anyone dealt with clams? If you get a chance pull up a few YouTube videos on how fast clams clean water...... it's pretty unbelievable.
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