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Marineland Emperor 400 Pro Series Bio-wheel Power Filter - Up to 80 gallon, Rite Size "E"

4.5 4.5 out of 5 stars 1,194 ratings

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Brand MarineLand
Color Black
Style Submersible
Product Dimensions 17"L x 7"W x 10.5"H
Item Weight 4.6 Pounds
Maximum Flow Rate 6.66 Gallons Per Minute

About this item

  • WITH ROTATING BIO-WHEEL: Patented Bio-Wheel technology provides excellent wet/dry biological filtration
  • MULTI-STAGE FILTRATION: Delivers mechanical, chemical and biological aquarium filtration to maintain a clean aquatic environment.
  • POWERFUL: Certified flow rate of 400 GPH in aquariums up to 80 gallons.
  • MARINELAND FILTRATION PRODUCTS: Count on Marineland brand for the most reliable, technically advanced aquariums and accessories on the market.
  • REPLACEMENT CARTRIDGES: Use with two Marineland Rite-Size E Filter Cartridges (purple label).

Customer ratings by feature

Sheerness
4.5 4.5
Easy to clean
4.4 4.4
Suction power
4.4 4.4
Noise level
4.1 4.1

Looking for specific info?

Product guides and documents

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 17 x 7 x 10.5 inches; 4.6 Pounds
  • Item model number ‏ : ‎ PF0400BD
  • Date First Available ‏ : ‎ October 2, 2001
  • Manufacturer ‏ : ‎ Marineland
  • ASIN ‏ : ‎ B000HHOI8G
  • Customer Reviews:
    4.5 4.5 out of 5 stars 1,194 ratings

Product Description

At Marineland, innovation powers everything we do. From industry firsts to industry standards, Marineland products are designed with both performance and style in mind. We push precision and power beyond the expected and listen to our loyal customers to make our products even better. We do this because at the heart of our innovative spirit is a desire to help hobbyists everywhere do more, create more and, most of all, enjoy more. Make it Marineland. 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. The BIO-Wheel Emperor Power Filter filters 400 gallons per hour.

Important information

Directions

See label for deatils

Customer reviews

4.5 out of 5 stars
4.5 out of 5
1,194 global ratings

Customers say

Customers like the quality, filter, and cleanliness of the water pump. For example, they say it does a great job, is easy to clean, and is powerful. Customers are also impresseded with the value, saying it's a powerful yet affordable filter. Opinions are mixed on noise and size.

AI-generated from the text of customer reviews

250 customers mention199 positive51 negative

Customers like the quality of the water pump. They say it does a great job, works well, and performs flawlessly. Some say that the filter works amazing and is an effective pump. Overall, most are happy with their purchase and recommend it to others.

"...consider myself a die hard on aqualears, however Emperor 400 is a very interesting, fun and efficient machine, I just had to have one!...." Read more

"...them down into filter slots, no rubber band necessary as the green pads are sturdy and hold their shape going down into slots...." Read more

"I had had this filter for over a year and it worked fantastically and quietly the whole time...." Read more

"...For the price, performance, and decibel level - I still give this a 4-star rating." Read more

131 customers mention121 positive10 negative

Customers are satisfied with the filter. They mention it's a great filter that works well for 50-80 gallon tanks, and is economical. The filter is powerful and quiet, and has many possibilities for media and mechanical filtering. Some say that the filter is one of the best hob style filters on the market. The filters are easy to replace and take up a good amount of space. Overall, customers are happy with their purchase and recommend it to others.

"The EMPEROR SERIES are great filters! I've use the 280 & 400 before back in the 90's. They were great then, they're great now...." Read more

"...customer service is outstanding and now I have a nice quiet and powerful filter again." Read more

"...The filter kept the water clear and free from unwanted chemical build up (we use a higher end test kit weekly)...." Read more

"...Just as the 350's did, the water is very clear and there is definitely enough filtration...." Read more

67 customers mention50 positive17 negative

Customers like the value of the water pump. They say it is a powerful yet affordable filter that is relatively easy to set up and is an inexpensive way to keep your tank crystal clear.

"...biowheels are fun to watch and water is cristal clear, good purchasing for the money.Update:1/11/14..." Read more

"...You will not be disappointed with price, performance and sound.Update (7/25/2013)..." Read more

"...that's pretty shady in my opinion and also I think it's a pretty stupid business model...." Read more

"...get sophisticated about your fish aquarium $$$, this filter is both economical and filters well for 50-80 gallon tanks ...." Read more

50 customers mention42 positive8 negative

Customers like the cleanliness of the water pump. They say it keeps their tank super clean, easy to clean, and chemical free. The filters themselves can be rinsed off weekly, prolonging the life of the filter. A special brush is included to facilitate cleaning of the tubing, and it clears up all floaters in 24 hours.

"...now less than efficient feeding method, it is still keeping my water clean and chemical free...." Read more

"...A special brush is included to facilitate cleaning of the tubing...." Read more

"Very simple and easy to clean filter. The sleek black look hides well on top of the tank. I have a canopy so I basically can't even see it...." Read more

"...This is by far easiest to use and the best in cleaning - both mechanical and biological. Peace of mind that there is no hose to leak or clogged...." Read more

47 customers mention43 positive4 negative

Customers are satisfied with the clarity of the water. They mention that the filter does a great job keeping their tank clear and free from unwanted chemical build up. Some say that their water is never cloudy and that the quality of the fish is never an issue.

"...filter others write about, biowheels are fun to watch and water is cristal clear, good purchasing for the money.Update:..." Read more

"...The filter kept the water clear and free from unwanted chemical build up (we use a higher end test kit weekly)...." Read more

"...Just as the 350's did, the water is very clear and there is definitely enough filtration...." Read more

"...Crystal clear water, easy to set up and also easy to change cartriges out when they go bad...." Read more

36 customers mention36 positive0 negative

Customers find the installation process of the water pump to be relatively easy. They mention that the instructions are easy to read and follow, the filter is simple and fast to put together, and the pump is easy to prime. Customers also say that the filter starts without a hitch and is quiet to operate.

"...Less hassle and maintenance, more bio/chemical/particles filtration, more water movement..like a filter and water circulation pump in one also...." Read more

"...Crystal clear water, easy to set up and also easy to change cartriges out when they go bad...." Read more

"...The unit assembles easily. Extra tubing comes with it for tall aquariums. A special brush is included to facilitate cleaning of the tubing...." Read more

"Very simple and easy to clean filter. The sleek black look hides well on top of the tank. I have a canopy so I basically can't even see it...." Read more

190 customers mention94 positive96 negative

Customers have mixed opinions about the noise of the water pump. Some mention it's super quiet, while others say that it makes a horrible sound like it'll break.

"...Filter is very quiet, I didnt have that touble of a noisy filter others write about, biowheels are fun to watch and water is cristal clear, good..." Read more

"...Allow the filter to empty water out of filter. You will hear bubbling and gurgling noises. Do not worry...." Read more

"...Needless to say, the customer service is outstanding and now I have a nice quiet and powerful filter again." Read more

"...I did have a very loud noise issue at first, but Marineland was MORE than accommodating and helpful by sending replacement parts free of charge...." Read more

29 customers mention17 positive12 negative

Customers are mixed about the size of the water pump. Some mention it's very large and well designed, while others say it'll save floor space as it hangs on the back. It has plenty of space in it for various filtration variations, and works well for a medium tank. However, some customers feel the water back into the tank are too short causing an annoying loud noise.

"...Peace of mind that there is no hose to leak or clogged. Save floor space as it hang on the back...." Read more

"...I'm reviewing the filters first thing I have to say about these they are really long you need to have a very very tall tank to put the extender my..." Read more

"...The stock intake tube is very long, essentially reached the bottom of by 90 gallon aquarium..." Read more

"...There is plenty of space in them for various filtration variations. They are also very quiet and easy to maintain. Yup, I like 'em." Read more

The EMPEROR SERIES are great filters! I've use the 280 & 400 before ...
5 Stars
The EMPEROR SERIES are great filters! I've use the 280 & 400 before ...
The EMPEROR SERIES are great filters! I've use the 280 & 400 before back in the 90's. They were great then, they're great now. There have have been some minor changes: No more control flow & window to see wheels turning. The rattling noise that everyone complains about is easy to fix. While the filter is running/on, lift the intake tube up and off the filter (ensure that the spray bars stay in place by holding/pushing them down in place while you lift up the intake tube. Allow the filter to empty water out of filter. You will hear bubbling and gurgling noises. Do not worry. Once the filter empties out and spray bars run out of water, carefully reinsert intake tube down into chamber, wait for filter to refill itself with water. Once filled,the filter should be back in normal operation and the noise gone (unless the shaft and or related parts to it are damaged). By doing this, it is like purging nd priming the filter. I think the filter gets foreign particles from time to time which caused the noise. Mine (I have 2 280's & 2 400's on my overstockecked planted freshwater 84 gallon long tank. Only One seems to have been unlucky to get small/micro snails inside of it). I also avoid using soil and sand in my tank which could get in filter impeller assembly when the substrate or sand is disturbed, especially if ur intake tube reaches close to the bottom. I decided to write this review for the sole purpose of informing others who have been frustrated or have read the negative reviews about the emperor power filters that the noise issues are easy to remedy. I never completely clean my emperors out which could increase more disturbance on the mechanical parts (impeller assembly and intake tube). If the impeller gets stuck, follow the same procedure as mentioned above. Use long pliers to realign impeller in assembly while intake tube is out. Once impeller is spinning again, reindeer intake tube. I just took care of a little rattling noise from one of my 400 emperor by performing the above mentioned procedure 30 minutes ago. It took me 2 minutes. I'm lazy when it comes to writing a review about anything on any forum. In fact this is probably my first review ever on anything because I can't remember any other review I've written before for the moment, but I feel like I wrote one before about something else totally not related to this subject (a very short one, probably under 20 words). This review I'm writing now about emperor filters is very important to me. I'm passionate about them. They beat canister and any other job filter. No hoses, no crawling under tank cabinet, no clogged hoses. Very user friendly. To clean spray bars, I don't dismantle it and use brush. I simply use a wire, bend it to a small 90 degree and insert it through each hole on the spray bars until the water flows freely. The most work required maintaining this filter is rinsing off the homemade screen pads (10 minutes tops, I have 4 emperors) which I have made out of green scrubbing pads cut out to the shape of the stock filter pad/tray with the stock blue floss and carbon removed. I used a box cutter blade to shave/cut the blue floss/pads off the black tray. I re use the black tray to work with my home made green scrubbing pads. I hold the two together as I slide them down into filter slots, no rubber band necessary as the green pads are sturdy and hold their shape going down into slots. My all 4 emperor filters are so quiet, the water trickling is louder than the motor. My water level reaches up to the lips of the output chutes....now that is quite. The higher water level moves/circulates water better,quieter as the surface of water travels from filter all the way to front of tank because the water doesn't drop from filter chute, but slides across onto surface of water to front of tank with less splashing. Higher water level of water also gives me more water in my tank. I am not a sales rep or anything if the sort. In just passionate about my hobbies and like to share what works. If a can convince one person to use the emperor power filters as I do...this review was worth writing. Less hassle and maintenance, more bio/chemical/particles filtration, more water movement..like a filter and water circulation pump in one also. I highly recommend the emperor filters. Once u know how to remedy the noise, it takes two minutes. Do not be frustrated. Just learn and figure out what makes noise and how it goes away. If I have to post a video on "how to", I will. I will find time out of my busy schedule. These filters are awesome!!!!
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Reviewed in the United States on June 27, 2013
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Reviewed in the United States on May 13, 2015
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5.0 out of 5 stars The EMPEROR SERIES are great filters! I've use the 280 & 400 before ...
Reviewed in the United States on May 13, 2015
The EMPEROR SERIES are great filters! I've use the 280 & 400 before back in the 90's. They were great then, they're great now. There have have been some minor changes: No more control flow & window to see wheels turning. The rattling noise that everyone complains about is easy to fix. While the filter is running/on, lift the intake tube up and off the filter (ensure that the spray bars stay in place by holding/pushing them down in place while you lift up the intake tube. Allow the filter to empty water out of filter. You will hear bubbling and gurgling noises. Do not worry. Once the filter empties out and spray bars run out of water, carefully reinsert intake tube down into chamber, wait for filter to refill itself with water. Once filled,the filter should be back in normal operation and the noise gone (unless the shaft and or related parts to it are damaged). By doing this, it is like purging nd priming the filter. I think the filter gets foreign particles from time to time which caused the noise. Mine (I have 2 280's & 2 400's on my overstockecked planted freshwater 84 gallon long tank. Only One seems to have been unlucky to get small/micro snails inside of it). I also avoid using soil and sand in my tank which could get in filter impeller assembly when the substrate or sand is disturbed, especially if ur intake tube reaches close to the bottom. I decided to write this review for the sole purpose of informing others who have been frustrated or have read the negative reviews about the emperor power filters that the noise issues are easy to remedy. I never completely clean my emperors out which could increase more disturbance on the mechanical parts (impeller assembly and intake tube). If the impeller gets stuck, follow the same procedure as mentioned above. Use long pliers to realign impeller in assembly while intake tube is out. Once impeller is spinning again, reindeer intake tube. I just took care of a little rattling noise from one of my 400 emperor by performing the above mentioned procedure 30 minutes ago. It took me 2 minutes. I'm lazy when it comes to writing a review about anything on any forum. In fact this is probably my first review ever on anything because I can't remember any other review I've written before for the moment, but I feel like I wrote one before about something else totally not related to this subject (a very short one, probably under 20 words). This review I'm writing now about emperor filters is very important to me. I'm passionate about them. They beat canister and any other job filter. No hoses, no crawling under tank cabinet, no clogged hoses. Very user friendly. To clean spray bars, I don't dismantle it and use brush. I simply use a wire, bend it to a small 90 degree and insert it through each hole on the spray bars until the water flows freely. The most work required maintaining this filter is rinsing off the homemade screen pads (10 minutes tops, I have 4 emperors) which I have made out of green scrubbing pads cut out to the shape of the stock filter pad/tray with the stock blue floss and carbon removed. I used a box cutter blade to shave/cut the blue floss/pads off the black tray. I re use the black tray to work with my home made green scrubbing pads. I hold the two together as I slide them down into filter slots, no rubber band necessary as the green pads are sturdy and hold their shape going down into slots. My all 4 emperor filters are so quiet, the water trickling is louder than the motor. My water level reaches up to the lips of the output chutes....now that is quite. The higher water level moves/circulates water better,quieter as the surface of water travels from filter all the way to front of tank because the water doesn't drop from filter chute, but slides across onto surface of water to front of tank with less splashing. Higher water level of water also gives me more water in my tank. I am not a sales rep or anything if the sort. In just passionate about my hobbies and like to share what works. If a can convince one person to use the emperor power filters as I do...this review was worth writing. Less hassle and maintenance, more bio/chemical/particles filtration, more water movement..like a filter and water circulation pump in one also. I highly recommend the emperor filters. Once u know how to remedy the noise, it takes two minutes. Do not be frustrated. Just learn and figure out what makes noise and how it goes away. If I have to post a video on "how to", I will. I will find time out of my busy schedule. These filters are awesome!!!!
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Reviewed in the United States on January 4, 2019
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