Cobalt Aquatics E-X-T 800 Inline Water Pump

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Cobalt Aquatics

The only pump in its class that features integrated 5/8” hose barbs and locking rings, the Cobalt Aquatics E-X-T inline pump’s unique design can be installed internally or externally. It can be positioned to push or pull water through your system, allowing complete flexibility on any aquarium, terrarium or vivarium setup.

*Please note, this pump is not self-priming.

  • Great for media reactors, UV sterilizers or inline heaters
  • Max flow rate of 210gph (800l)
  • Power Consumption: 6.5W
  • 5/8” Hose barb with locking rings
  • Dimensions: 6.5" x 2.5" x 2.5"
  • Innovative impeller design can push or pull water
  • Unique silent inline pump can be installed internally or externally
  • Compact housing with integrated suction cup mounts for ultimate flexibility

Product Manuals & Documentation

Cobalt Aquatics E-X-T 800 Inline Water Pump

Owner's Manual available for download in Adobe PDF file format

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.

MS from USA


Experience Level: Expert

Cobalt E-X-T 800 Inline Pump

Re: Cobalt E-X-T 800 Inline Pump Before I purchased these pumps, I called the USA distributor to insure that the pumps did not have extractables [into the circulating water], because I could not have any contaminates other than what I was testing in the recirculating tank for water testing [not for aquarium use]. These pumps are silent & exhibit no audible vibration even after 1st test unit was running continuously for more than 3 months with tap water and fine suspended mineral particles in the recirculating water. One problem with the pumps is the clamping area and force of the knurled clamping nuts that are part of the tube barb assembly. These nuts cannot securely hold and prevent leakage with my 5/8" ID X 13/16" OD food/dairy/potable water grade clear Tygon PVC flexible tubing. I had to remove the knurled nuts and result to stainless steel band clamps designed for soft tubing which had to be tightened to the maximum. Possibly, aquarium grade PVC tubing may have worked better but without traceability of the tubing, I could not use it. It would have been better to have the 360-degree clamping force spiral spring clamps that automotive manufacturers use on modern cooling systems which have plastic fittings. These type of clamps prevent crushing of the plastic fittings. I would like Cobalt to dispense with the knurled nuts and use these. Cost would be the same & regardless of the durometer of the tubing employed tubing connections would be secure and leak free.

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Experience Level: Intermediate

Not ha[ppy

This item should be sold with a large font explaining that it needs to be primed and that priming the pump is very difficult! I think MD is a wonderful business with lots of help available, however; I threw this thing away!!! Mike

1 out of 1 found this review helpful

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Jim from Illinois


Experience Level: Expert


For the most part the pump works. The only reason I did not give it 5 stars is it is not self priming. I use it to transfer RO water from storage containers to my top off and it does that fine once it's primed.

1 out of 1 found this review helpful

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Experience Level: Intermediate

Cobalt Aquatics E-X-T 800

Not bad very quite. I have it installed out side of aquarium as a pull water setup. I had to prime it with another pump until it pulled the water through other than that works great.

9 out of 9 found this review helpful

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