Emperor® Power Filters

Product No. PF0280BD
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Perfect aquarium filters for both freshwater and saltwater aquariums.

Emperor® Power Filter Systems are advanced aquarium technology at its finest. With a revolutionary two-pump 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.

Emperor® Power Filters is rated 3.561 out of 5 by 41.
Rated 5 out of 5 by from Excellent filtration, fast bio set up with bio whe Was having trouble setting up a aquarium with nitrite and ammonia, until I put the 400 on it. The bio wheel seems to work very effectively, compared to other filters
Date published: 2016-04-25
Rated 4 out of 5 by from Works great but Purchased a few weeks ago as secondary on my 72 gallon African Cichlid tank work great I'm turning the tank approx 10 times an hour , 2 improvements to take this filter to a great level . 1 cleanable mechanical filter pads ( I'm burning through them. 2 needs a strap style handle to lift & remove filter from tank ,it's impossible to remove full of water to do maintenance.
Date published: 2016-04-22
Rated 5 out of 5 by from Good product Replaced a 400 with a 280. Works well but you must watch and replace the filter regularlyIf not it will overflow
Date published: 2016-03-25
Rated 3 out of 5 by from Spray bars i bought this a week ago having a bit of issues on the intake tube being very lose already had a fish knock it out of place during the night and the motor ran dry all night I need help or I need this emperor 400 replaced
Date published: 2016-03-08
Rated 5 out of 5 by from Great filter I am using one of these filters on my 27gallon cube tank. It's very quite and is keeping the tank very clean. I like the bio wheel. It really helps if you don't have live plants in your tank or are just getting your tank established. I recommended this filter system to uncle who has a 55 gallon and it is keeping his tank clear as well.
Date published: 2016-02-28
Rated 5 out of 5 by from awesome filters great filters, they keep my water crystal clear. cant wait to try out a marineland canister filter on my new tank.
Date published: 2016-01-19
Rated 2 out of 5 by from Quit Working I used this filter a couple of months, stored it and then try to use it again and it won't work now. I have 2 Emperor 400's that are now worthless and wasted money.
Date published: 2016-01-18
Rated 5 out of 5 by from Great filter, put extra bio in the grey cartridges Great filter, put extra bio in the grey cartridges
Date published: 2016-01-10
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If I unplug the filter to replace some filer media will it just start up again when I plug it back in or do I need to add water to the filter?

Asked by: Stewartira
That depends on a number of factors, but in general, you will need to make sure the tank itself and the filter are both full with water. Additionally, if the filter has not been cleaned in a while, it may need that done as well.BREX
Answered by: BREX
Date published: 2016-04-26

Is there a difference between the 400b and the 400 Pro Series? Size, performance? I know Petco sells the 400b while everybody else seems to have the 400 Pro Series.

Asked by: Boog
The current version is actually Emperor 400BD. The last change to the filter was back in early 2000s; around 2003. Packaging changes have occurred however, and we have certain package styles for different markets, which is what you are experiencing. The filter itself is the same.BREX
Answered by: BREX
Date published: 2016-04-22

I have a a marine water filter my bio wheeler never worked won't spin bought it new should I take filter back or what and buy different brand hate buying stuff that don't work and where do I get the insert for the charcoal behind the filter 

Asked by: Lisamike
There are several possible reasons why your bio wheel won't spin. Make sure the bio wheel bearings are in place properly, not missing, and do not have any buildup on them. You can clean them with a q tip and vinegar. Second, the water level in the tank should be to the top of the tank, not several inches below, so if this is a turtle tank or has evaporated a bit, you may need to only top the tank. Last, remove the impeller and check for any issues with it, and make sure it is seated properly. If you are unable to fix the issue, please call us directly at 1-800-322-1266. Our team would be more than happy to assist you.If you are referring to the filter cartridge, those are available through most major pet stores, local fish stores, and vendors online.BREX
Answered by: BREX
Date published: 2016-04-15

Spray bar wheel is not moving, what do I do  ?

Asked by: Jsus
First, run a brush through the spray bar to make sure it is not clogged. That is the most likely scenario. Second, check to be sure you haven't lost the gray biowheel bearings that the bio wheel sits in. Last, but not least, take the filter off of the tank, take it completely apart, and thoroughly clean it, especially the impeller, intake tube, and area the impeller resides in.BREX
Answered by: BREX
Date published: 2016-04-11

What is the power requirments for the 400? I thought you people are suppose to show it on box and in the instructions.. I need to know how many watts it uses.

Asked by: bwingler
No, it is not required to put it on the box or in the instructions. However, it IS on the filter itself, the motor to be precise. 19.2 watts.BREX
Answered by: BREX
Date published: 2016-04-07

I would like to run my emporer 208 without charcoal. Is there something else that I can use as filter floss in the place of the charcoal and floss that you provide? Thank you

Asked by: Bob D
There are all kinds of ways to customize your filter. Filter floss is sold in bags for just a few dollars. It looks like white cotton. We sell filter sleeves for the Magnum 350 that would work as well.BREX
Answered by: BREX
Date published: 2016-04-10

My motor is going but it is not pumping the water so I was wondering why

Asked by: arob45a
There are a lot of possible reasons.- make sure your water level is to the top of the tank- filter box should be filled with water- impeller could be dirty so unplug the unit from the wall, take it off the tank, remove the intake tube, flow manifold housing, and impeller and thoroughly clean everythingBREX
Answered by: BREX
Date published: 2016-04-06

I have a model pfes05hx does it wirk on it if yes where can i buy it and if available online ?

Asked by: Biba
No, it does not, the link you provided is for a very large HOB filter. I am not sure what you are looking for, but if you need a part, type in "hex 5" in our search bar and it will bring up the parts for it.BREX
Answered by: BREX
Date published: 2016-03-23
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 Emperor Power Filter Manual

Emperor Quick Set Up Guide


Certified Flow Rate

Aquarium Size

Rite Size Media

Emperor 280

280 GPH

up to 50 gallons


Emperor 400

400 GPH

up to 80 gallons


Penguin & Emperor Cartridge Dimensions