Online Discount Pet Supplies & Toys For All Animals
Buy today, ships today
Free shipping on orders over $75
40,000 pet products
Buy today,
ships today
We promise to ship your order as fast as humanly possible. In fact, 99% of orders placed before 2 pm EST (M-F) ship the same day! Learn More
FREE Shipping on
Orders Over $75
Standard ground shipping (1-7 business days) starts at a low $5.99 and most orders over $75 ship FREE. Learn More
40,000 Pet Products
We carry over 40,000 pet-related products for every pet in your home. We stock all the popular products you’ll find in your local pet store, but sell them for less! See Specials
Your cart is currently empty.
Home » Aquarium Supplies  » Filters  » Inline & Specialty Filters  »  Marine Depot Double Media Reactor for GFO and Carbon w/ Cobalt Aquatics MJ1200 Pump
Marine Depot Double Media Reactor for GFO and Carbon w/ Cobalt Aquatics MJ1200 Pump

Marine Depot Double Media Reactor for GFO and Carbon w/ Cobalt Aquatics MJ1200 Pump

Average Rating 2.5 0
Write A Review
Product Review
We value your opinion & experience
Thank you for taking the time to review our products!

This is a Product Review for: Marine Depot Double Media Reactor for GFO and Carbon w/ Cobalt Aquatics MJ1200 Pump
Name to display on the review:
Location (ex: Anaheim, CA):
Your experience level:
How would you rate this product?
Review Title:
Write your review:
(Please focus on product quality and performance)
This item has been discontinued
Item #:
Notify Me
Just enter your email address below and we'll let you know when the product you are looking for becomes available!

Item Code:
Your Email:
Add to Cart or Notify Me
This item is temporarily unavailable but will be back in stock soon.

Item #
Click the Add To Cart button below if you'd like to reserve this item today. Any other items included in your order will be immediately processed and shipped. We will ship this item separately as soon as it arrives. We will not charge you for this item until it ships and you will incur no additional shipping charges.
Enter your email address in the field below and click the Notify Me button if you'd like us to send you an email when this item becomes available. Although you will be immediately notified when we have stock on hand, we will not reserve any units for you; you must return to our website and place an order.

Add to Wishlist
Select Wish List:
Comments (up to 200 characters):
Quantity Desired:
Quantity Received:

Marine Depot Double Media Reactor for GFO and Carbon w/ Cobalt Aquatics MJ1200 Pump Information

Marine Depot DOUBLE Media Reactor for GFO or Carbon PACKAGE (includes Cobalt MJ1200 pump)

Finally, an easy-to-use media reactor that is both economical and durable!

Dual-Chamber makes it great for use with GFO (granular ferrous oxide) and activated carbon. It can also be used for biological media or most types of aquarium filter media.

  • Heavy-duty, durable construction
  • Dual-Chamber: one for GFO, one for activated carbon
  • Clear housings for easy visual inspection
  • High-capacity cartridges
  • Quick disconnect fittings for easy servicing
  • Ball valve for precise flow adjustment
  • Fitting allows for quick-disconnect with any Cobalt MJ powerhead
  • Wall bracket for installation inside aquarium stand
  • Filter wrench included
*Filter media sold separately
**Not designed for BioPellets

Cobalt MJ1200 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.

  • Fully rotational output
  • Fully sealed intake for internal and external use
  • Universal intake tube
  • Adjustable hanger with cord guide and 6ft power cord
  • Adjustable venturi with silencer
  • Triple suction cup mount
  • Large intake screen for use with sponge
  • Max Flow: 295GPH
  • Max Height: 69"
  • Power Consumption: 20W

Manufacturer Info carries more than 7,500 popular and hard-to-find aquarium supplies and fish tank accessories for saltwater and freshwater aquariums. You’ll find the top aquarium equipment and aquarium accessories from Hagen, Red Sea, Eheim, Coralife and many more. All of our aquarium pet supplies carry a 60-day money-back guarantee and we offer a Low Price Guarantee on all in-stock aquarium products. We ship 99.9% of fish tank supplies the same business day if you place your order before 6 PM EST. If you have any questions about fish supplies please do not hesitate to contact us. We’re here to help!

Marine Depot Double Media Reactor for GFO and Carbon w/ Cobalt Aquatics MJ1200 Pump Reviews

Average Rating
(0 reviews)
Sort Reviews By:

Simple and Effective

Reviewers Rating Excellent!

Posted: 8/26/2014 from Claremont, California
5.0 5
Experience Level: Intermediate

Comments: I have the MD double media reactor mounted inside my aquarium stand. Installation was fairly straight-forward if you watch the video. I run AquaMaxx Carbon in the first reactor and GFO inside the second. The flow rate is a bit difficult to control, but my water is crystal clear and algae growth has decreased, so I know they are doing their jobs. These units saved me a lot of space and have already proven to be more effective than using filter media bags. Maintenance is easy; I swap out media once per month.

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


Reviewers Rating Unsatisfactory

Posted: 10/31/2013 from SUFFOLK, VA UNITED STATES
0.5 5
Experience Level: Intermediate

Comments: This filter clogs very easily. In my opinion the pump that comes with it does not have enough pressure. The instructions could be better and you may have to buy extra hose. I'm returning the one I bought.

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

Dual reactor

Reviewers Rating Great

Posted: 7/14/2013 from KENNEWICK, WA UNITED STATES
4.0 5
Experience Level: Intermediate

Comments: Product was well packed and upon inspection seems really well made. At first start up there were 0 leaks a little tricky getting the flow valve set correctly but once I got that all seems to be ok. Running seachem carbon in the first and seachem phosgaurd in the sencond. Its only been running for 2 days so time will tell.

Did you find this review helpful? Yes No

Marine depot GFO media reactor

Reviewers Rating Unsatisfactory

Posted: 6/24/2013 from DIAMOND BAR, CA UNITED STATES
0.5 5
Experience Level: Intermediate

Comments: This reactor did not meet my expectations. The biggest issue was the GFO media was so light that their was no weight to keep the pads in place so the pads lift and mix with the media. If you put to much media in the chamber their is no flow to keep the media moving so everything settles to the bottom. I'm now using another reactor and all is well.

Did you find this review helpful? Yes No

Terms & Conditions | Privacy Policy © 1999-2015 All rights reserved.