Danner 6404 First Impressions

Great air pump.

We can hear the tank bubbles, but nothing noisy from the pumps at all. Not to mention tank depth, etc becomes a factor. And one to the additional accessories for extra oxygen output only. Buzzing, humming, vibrating- they were driving me nuts! I added a check valve to my airline tubing and works as expected. The pump works very well in my 75G tank. My 20H tank is in my office, 3 feet away from my desk.

  • Editor's Impressions Of The Danner 6404
  • Pump Power
  • Build Quality
  • Value For Money
  • Feature Set

Danner 6404 Final Thoughts

I hope this helps anyone.

I use this on a 5-way valve for a 75 gallon tank. Buzzing, humming, vibrating- they were driving me nuts! It has one air outlet so i used a spliter& ran a tube to each end of bubbler. I use them in my Tilapia tanks and Koi pond. I put a wire tie Tightly over the tube and barbs and it's perfect. Make sure the hose is connected well. This happened to me with this unit.

Overall Score

(420 Points)
  • Danner 6404 Features & Specs
  • Air volume 275 cu.In/Min.
  • Max water depth 4'
  • Provides oxygen to freshwater/Saltwater aquariums
  • Accepts standard Airline tubing
  • 6' Cord length
  • Manufacture: TopDawg Pet Supply
  • Product Dimensions: 9.13 x 3.13 x 3.13 inches; 1 Pounds

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