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riporto questo da un forum statunitense:
This device is along the same thinking as the Ion-gen that some people use in ponds. I have talked to many people that used the Ion-gen in their ponds and the overwhelming majority of them say it's a waste of money. I don't see this product being much different. I think Tom put it very well, take the time to learn proper care, maintenance, and co2 and forget about an easy fix because there is no such thing.
per cui credo sia un buco nell'acqua...
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