For the price, it's quite decent but if not taking price into consideration, there are much better skimmers out in the market.
So far, the biggest issue is the collection cup not sitting tightly on the O-ring, water may leak out from there.
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A fishtank is just like your computer. When your tank crash(OS crash), its time to cleanup(reformat hard drive) and setup(install OS) again and add new livestock(re-install software).
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