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Quiet By Robert on 3/9/14Robert would recommend this product to a friendThe 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 5/2/13Jeff would recommend this product to a friendI 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 4/13/13bruce would recommend this product to a friendThe Mj400 is powering my ATO. I was very surprised how quiet the pump ran and would definitely recommend.
Great pump By Daniel on 8/4/12Daniel would recommend this product to a friendI 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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The Cobalt Aquatics MJ series of pumps is the same Italian-made MJ you have been using for the last 20 years. Reliability and low operating noise have been the staple of this pump series, a principle reason why aquarists around the world have been using them for decades. After the original MJ distributor moved operations to China, Cobalt Aquatics jumped on the opportunity to work with the Italian manufacturer to continue to provide a source for this high quality product line. Mostly used for wave makers, protein skimmers, calcium reactors, nano aquariums, under gravel filters and hydroponic applications.
- Fully rotational output
- Fully sealed intake for internal and external use
- Universal intake tube Adjustable hanger with cord guide and 6 Ft power cord
- Adjustable venturi with silencer
- Triple suction cup mount
- Large intake screen for use with sponge
Quick Compare - Cobalt Aquatics MJ Powerheads
|Model||Flow Rate||Maximum Head Pressure||Watts|
|Cobalt MJ400||106 GPH||29"||5|
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6325 Sandburg Road, Suite 400
Golden Valley, MN 55427 Map
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