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Home » Saltwater Aquarium Supplies  » Powerheads  » Fixed Flow  »  Cobalt Aquatics MJ Multi-Purpose Powerhead/Pump
Cobalt Aquatics MJ Multi-Purpose Powerhead/Pump

Cobalt Aquatics MJ Multi-Purpose Powerhead/Pump

Average Rating 5 22
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Cobalt Aquatics MJ Multi-Purpose Powerhead/Pump Information




The Original MJ multi-use submersible pump and power head is built to perform and last under the harshest conditions. Ideal for wave makers, protein skimmers, calcium reactors, nano aquariums, under gravel filters and hydroponic applications.

Includes:
    1. Fully rotational output
    2. Fully sealed intake for internal and external use
    3. Universal intake tube
    4. Adjustable hanger with cord guide and 6ft power cord
    5. Adjustable venturi with silencer
    6. Triple suction cup mount
    7. Large intake screen for use with sponge
    8. Fits 1/2" ID vinyl tubing

Model Watt
120v-60Hz
Max Flow
(gph/lph)
Max Height
(in / m)
MJ400 5 106 (400) 29" (.73m)
MJ600 7.5 160 (600) 53" (1.35m)
MJ900 8.5 230 (870) 46" (1.17m)
MJ1200 20 295 (1100) 69" (1.74m)





Manufacturer Info

On April 26th, 2011 Viral Surati, Randy Parham and Les Wilson set off for the adventure of a lifetime. The three hardcore fishgeeks set off to create an aquatics company of their own. Based in the values instilled in them by mentors of company`s past and lessons learned from a lifetime of fish keeping, Cobalt Aquatics and it sister brand Cobalt Pond were formed. Starting with a line of koi food proudly made in the USA and Equipment made in Italy, Cobalt Aquatics will always strive to bring the highest quality products to market.

Cobalt Aquatics MJ Multi-Purpose Powerhead/Pump Reviews



Average Rating
(22 reviews)
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Problem Solved

by
Reviewers Rating Excellent!


Posted: 7/31/2015 from HARRISON TOWNSHIP, MI UNITED S
4.5 5
Experience Level: Beginner


Comments: I contacted MD to ask if I could upgrade the pump that came with my JBJ 24g Nano. I needed better water flow. I was promptly given some options and chose the Cobalt Aquatics MJ 1200. It comes with instructions, however, you won't need them. It's supper easy to install and is vary quiet. Problem Solved...Thnx!


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Using on next reef mr1

by
Reviewers Rating Excellent!


Posted: 6/10/2015 from MYERSVILLE, MD UNITED STATES
5.0 5
Experience Level: Intermediate


Comments: Using as a pump for my phosphate and carbon media in my next reef mri Seems to work well and powers media flow great.


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MJ1200

by
Reviewers Rating Excellent!


Posted: 3/24/2015 from Port Saint Lucie, FL UNITED ST
4.5 5
Experience Level: Intermediate


Comments: I wish it would have come with "some" tubing for the sump...can't have it all... Great, quiet pump.


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MJ pump

by
Reviewers Rating Excellent!


Posted: 2/3/2015 from Northridge, CA UNITED STATES
5.0 5
Experience Level: Beginner


Comments: I'm satisfied with the performance so far...


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Cobalt mj 400

by
Reviewers Rating Excellent!


Posted: 1/8/2015 from northville, NY UNITED STATES
5.0 5
Experience Level: Expert


Comments: Excellent product, well made, quiet, runs my calcium, gfo and carbon reactor. An excellent value


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Cobalt mj1200 p/h

by
Reviewers Rating Excellent!


Posted: 6/2/2014 from QUEENS, NY UNITED STATES
5.0 5
Experience Level: Intermediate


Comments: It's excellent for bed filters IAM using 3 MJ1200 power heads for my 150g tank it's works good I don't have any nitrate problems it's almost 5 months My tank is loaded with 24 kinds of fish and I Feed them 6 times a day.


2 of 4 People found this review helpful, did you? Yes No




Seems as good as old Maxi-Jet

by
Reviewers Rating Excellent!


Posted: 3/1/2014 from COLLEGEVILLE, PA UNITED STATES
5.0 5
Experience Level: Expert


Comments: Seems as good as the old "Maxi-Jet" branded power heads w/ a couple new features such as an o-ring on the impellar housing. So far so good. Time will tell.


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Perfect upgrade return

by
Reviewers Rating Excellent!


Posted: 1/14/2014 from PASADENA, MD UNITED STATES
5.0 5
Experience Level: Intermediate


Comments: After getting advice from fellow reefers on whether or not to upgrade the stock return on my IM Nuvo16 I purchased this. The turn over rate of my tank increased from 211GPH to 295GPH. It is just as quiet as the stock return pump and only slightly bigger. So far so good.


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undergravel filter powerhead

by
Reviewers Rating Excellent!


Posted: 1/11/2014 from ABERDEEN, SD UNITED STATES
5.0 5
Experience Level: Intermediate


Comments: This powerhead is ideal for undergravel filters in 30 to 55 gallon tanks. A product like this was hard for me to find. I am using it for my fresh water tanks and do not need a powerful flow of water. 106 gallons of water per hour flow is just about right for the undergravel filter attachment. My fish will not be buffeted by a strong water flow. The extra parts inlcuded with the device were useful.


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Quality

by
Reviewers Rating Excellent!


Posted: 10/22/2013 from Saint Charles, IL UNITED STATE
5.0 5
Experience Level: Expert


Comments: I have had reef aquariums for over 20 years so I have been around a bit. Point being that I have many different setups to this point. I was nervous to order a new replacement after my second MaxJet had gone out. I use these in my 29 gallon Bio. After speaking with a representative at the Depot, these were highly recommended. I just put them in a few days ago and can tell that they are good quality. Very quiet which is important.


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