Emperor® Power Filter

Product No. PF0400BD

Emperor® Power Filter is rated 3.2 out of 5 by 25.
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Emperor® Power Filter Systems are advanced aquarium technology at its finest. With a revolutionary design, the Emperor’s flow and filtration efficiencies are unmatched by other filters in their class.

Featuring as much as twice the filter cartridge capacity, additional chemical filtration capability, and extra large, spray bar-driven BIO-Wheel wet/dry biological filtration, Emperor Filter systems offer aquarists a filtration system that can stand up to any aquarium they can dream of.
  • Three-stage BIO-Wheel® filters for freshwater and saltwater aquariums
  • The BIO-Wheel delivers superior wet/dry biological filtration for nitrifying bacterial growth, eliminating toxic ammonia and nitrite
  • Marineland® Rite-Size™ Filter Cartridges provide mechanical and chemical filtration, screening out dirt and debris and removing odors, discoloration and impurities
  • Multi-stage filtration for a clean healthy aquatic environment
  • Certified flow rate for Emperor 400 is 400GPH
  • Use the Emperor 400 on aquariums up to 80 gallons
Rated 3 out of 5 by from Water flow I have two filters on a 45 gal. aquarium the pingeuin 200 and the Emperor 400. why is the water flow on the smaller 200 much higher than the larger 400. Is the Emperor just a larger filter with the same motor as the smaller one. I get more ripple on the surface from the small 200 filter. why?
Date published: 2019-01-16
Rated 5 out of 5 by from Good filter! Had mine for about a year and works great. It's easy to use and quiet. Thankful it came with a very long intake so that it can be custom trimmed to fit a large tank.
Date published: 2019-01-11
Rated 1 out of 5 by from Two New One Way Too Noisey I have one existing Emperor 400 that is awesome. I decided to add a second to my 75g tank. Bought one a week ago and the filter made horrible rattling noises. Checked impeller and all other parts and all was good. Decided that it must be defective, so I returned it to Petsmart for a new one. Installed new one today with the same issue. Called Marineland and we checked the impeller again and could not eliminate the rattling (castanet) sound. Tech support offered to send me another one ( which was great). However, I would tend to doubt that two brand new ones had the same issue. So I am not confident that the 3rd new one will solve the issue. Fingers crossed for when the new one comes in, but I would love to hear some reasons as to why this is happening when I have had one for years with no issues?????
Date published: 2018-12-18
Rated 5 out of 5 by from Excellent filter This filter has been excellent for over 5 years, have recently run into an issue with the bio wherl spray bars not spraying. It started with spray bars barely spraying,  so I disassembled the unit did a thorough cleaning, and when I reassembled the unit the bars sprayed for about 2 seconds and will not spray again.  I have had this filter about 5 years and no issues until now. No cracks, o rings are still good. Is it possible I might need a new impeller, there seems to be a lot of play in it? And the cover is on the bottom that keeps impeller in place.
Date published: 2018-12-15
Rated 1 out of 5 by from $65 for am emperor 400 I looked at them 2 months ago and the were $35 I was gonna but a few of them but since you jacked the cost another $30 I ordered 3 aqua clear 110s because unlike the 400 emperor at least the aqua clear is worth that much
Date published: 2018-12-09
Rated 5 out of 5 by from Great filter I have never owned a marineland product before. I decided to try this out for my 29 gallon saltwater reef tank. Setting it up was easy. However I do not like how long the tubing is that is used for the intake. I had to almost cut it in half which I'm hoping once i set up my 125 gallon saltwater tank i can get another replacement intake tube. but other than that so far it does an excellent job at cleaning the tank from debris that get stuck behind the live rock. Compared to my aquaclear 70 this one beats it hands down. looks much cooler too with the two waterfalls and the intake tube for lower in the tank and halfway intake. If all goes well I will probably do an update on it if I decide to use it on my 125 later.
Date published: 2018-11-11
Rated 3 out of 5 by from Quit after 8months I had asked my dad to buy the emperor to go with my largest newest aquarium for a Xmas present for me.I have four of the penguin 350s and although a bit noisy seemed to work alright. I installed the emperor and woke up not even 9 months later and it was dead in the water. I maintain each filter weekly and inspect each one almost daily. But no power or any filter sound. The impeller had no life and no blockages or sand or anything was seen. I talked to the store where purchased and they would not help me. I don't think a higher price model like this should only last 8months when it was not even the only filter on the tank. I prob won't buy another one as it really frustrated me.
Date published: 2018-11-06
Rated 1 out of 5 by from Spray bars don't work I bought this in January 2017. After running for 3 months, I took it off for cleaning. The spray bars never worked again. Customer service sent me a new one, same thing happened. I can get the spray bars to work, until I install the uplift intake tube, then they stop. I triple checked to ensure I installed everything properly, but I can't get the spray bars to work once the intake tube is installed. I cannot recommend this filter at all.
Date published: 2018-10-08
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