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Cobalt MJ400 Powerhead

SKU: 210500


  • Quiet By Robert on 3/9/14

    The maxi-jet double pack prefilter fits on it, its about as quiet as my heater haha, i sleep close to it and can never hear it
  • Serviceable, quiet powerhead By Jeff on 5/2/13

    I bought this powerhead for extra flow in my 18" cube coral quarantine tank. It has nearly silent operation and does its job well. I would encourage anyone looking for a small, inexpensive powerhead to give this product a try.
  • Nice pump By bruce on 4/13/13

    The Mj400 is powering my ATO. I was very surprised how quiet the pump ran and would definitely recommend.
  • Great pump By Daniel on 8/4/12

    I will for now on only buy Cobalt pump for my pump needs. I cant even hear this thing running and its definitely running great product.

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