Emperor® Power Filter

Product No. PF0400BD

Emperor® Power Filter is rated 3.3 out of 5 by 35.
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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 5 out of 5 by from Best filter I had a 350 and lasted over 20 years. Just bought a new one and as long as it’s maintained it will last a long time.
Date published: 2019-07-24
Rated 2 out of 5 by from Doesn't seem to last very long. I have gone through 3 of these now. I have 2 of the 400's on my 110 Gallon Tank. I have replaced 1 about 4 months in and now the other one seems to not be working correctly. The water has totally stopped coming out the wands and seems to be something with the propeller. Seriously looking into just replacing both of them with a totally different system. If I have to buy new systems every year this is not worth it.
Date published: 2019-07-02
Rated 4 out of 5 by from great product I have been using Emperor 400 Filters for years. At onr point in time I was using 8 of them, I called them my work horses. I still have all of them some of which must be 20 or more years old and they still work beautifully. Occassioally I need to replace an impellar and arelly anything else. My favorite filter ever. Jim Kuhn 6/28/19
Date published: 2019-06-28
Rated 5 out of 5 by from Clear, clean water I have used the emperor 400 series for man years. Excellent water conditions if you pay attention to them. Meaning the proper matainance for any filter system. I was actually looking for an Emperor for a smaller tank. Worth a shot for sure.
Date published: 2019-04-30
Rated 1 out of 5 by from NOISY! Decent filter but it is so loud it can't be used...tried everything to quiet it down but it's hopeless...
Date published: 2019-04-02
Rated 2 out of 5 by from Not for sand substrate I've had this filter for about 6 months. I've had to change the impeller 3 times already. I have sand substrate and it shaves away at the magnet causing the impeller to go off balance and create quite a noise. Once I replace the impeller the unit is quite again for another month or two. This might be an unfair knock at this product but everyone should know that this will likely happen if you have sand substrate. If there are any recommendations to permanently fix this reoccurring problem, I am all ears.
Date published: 2019-04-01
Rated 5 out of 5 by from This filter moves water! I purchased my first Mainland filter. I am absolutely amazing with how much water this filter moves. I am not a fan of the replaceable cartridges, but thats not a problem for me. This filter was worth the money and once it establishes a good biological filter I will be replacing my aqua clear 110 with another Emperor 400
Date published: 2019-03-18
Rated 1 out of 5 by from just up and quits working in just over a year to year and half, i have had to replace this unit 3 times. Each time it is the same problem, it stops sucking up the water into the unit. The only reason, i bought the same unit was becuase of all the supplies i have won't fit anything else. Im lucky if i get a couple months maybe 6 at best before it dies and i have to get a new one. This can't be normal, but the same issue on all 3 is ridiculous.
Date published: 2019-02-12
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