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Title: No instructions, confusing
Review: I bought this because it was cheap and didn't seem to require anything active (pump, bubbler, etc.). But I think I was mislead or confused since there were no instructions with the filter. It must require a pump to push the water up through the filter...because otherwise it does nothing. Perhaps to an experienced fish tank owner that's an obvious requirement for this product, but should be specified. Since it's for a fish bowl, it seems that more clear instructions are needed since people with bowls *generally* seem to be folks who are just starting out with fish, as was my case.
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