My lfs (which i think is a very good one and the guy who has been running it for years knows what he is talking about) keeps them in stock. His look very healthy and one of them has been there for a while and looks great. He has a big filter system that doesn't have any impellers and he says that allows him to keep them becouse the phytoplankton does not get killed. I thought that was intresting. I personally haven't tried one but i will some time.
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ConMan
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