I have SWC 120 (Atman pump) and 180 (Sicce pump), and they both start up no problem. I put the Red Devil needlewheel impeller in the Sicce as soon as I bought it. I'm not familiar with the BM or the Eshopps. I would pick the Skimz over the Vertex, but I think an SWC is a better bang for the buck. Compare the air input and power usage when you compare skimmers.
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~ Mindy
SPS fanatic.
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