Flow and filtration efficiencies unmatched by other filters in their class. As much as twice the filter cartridge capacity, additional chemical filtration capability, and an extra effective spray bar, driven by BIO-Wheel wet/dry biological filtration...The Emperor filtration systems truly are the future of advanced aquarium technology.The Emperors feature not only one pump (as ordinary power filters do), but have two separate water pumps. The Flow Pump directs water through the entire multi-stage filtration system. The BIO-Pump pressurizes and sends streams of prefiltered, oxygen-rich water through the adjustable spray bars to power each BIO-Wheel. And...the unique, patent pending Emperor design allows the BIO-Pump to continue powering the BIO-Wheels even when Flow Pump output is reduced by the convenient One-Touch Flow Control.
Emperor 400 for aquariums up to 80 gallons. Flow is 400 GPH.
Emperor 280 for aquariums up to 50 gallons. Flow is 280 GPH.
Ndambros has used this product for 3 Years or More.
Overall Rating: 9/10
December 29, 2011
"Best Power Filter In This Price Range"
I have 14 Tanks and all of the larger ones use Marineland Emperor 400 or Penguin 350 models. Some have been running for more than 4 years - 24/7. I've only replace 2 impellers so far. Any noise produced by these filters is from a poorly seated impeller or insufficient maintenance. Every so often, the intake assembly must be removed, cleaned and put back correctly!
As for Marineland Heaters, they went from best to worst! I've replaced all of them with Hagen/Jaegers and am quite impressed.
I've had the worst luck with these pumps. I find them very cheaply made, the filter cartridges are flimsy and even with scheduled cleaning the props would seize and shut down. Aquaclear has been great for me, for hang on filters.
I have 6 tanks running at this time, and have tried all types of filter options. Marineland filters are easy to use and very effective. I hang mine on the side of the tank so I get a nice flo across the top of the tank, and clean up is easy 10min filter cleaning.
I like these filters for the simple fact that they perform and perform well. As far as noise goes, my experience has been that some are noisey others are not. Check for bad impellar if it's Whhhhrrrr, whhhhrrrr I am a must for quiet filters and I have 2 400's on a 75 gallon in my home theatre room. I find the ambient noise in addition to the TV drowns the noise. The Bio-Wheels...? Love em. Been using this since 1999
Mikecacho has used this product for 3 Years or More.
Overall Rating: 9.5/10
August 25, 2011
"Powerful and percise"
I have been a huge fan of the Marineland powerfilters for years, they provide the best cleaning for its type and purpose.
The 400 really picks up a hefty amount of waste that i have not seen in the AC series (which i use as well) The only down fall to the Marineland line is the expensive media, and loud noise.
They have great flow but it has one major design flaw...once the vertical media gets clogged up, water starts going around and over it...Aquaclear's do not have that problem and have a much superior design. The media customization options are not as good as the Aquaclear's either because of the design. I would choose an Aquaclear in any tank over the Emperor power filters. Even the minimum wage teenage dummies at PetCo and Petsmart recommend Aquaclear's over these since the price difference is so minimal for a huge filtration difference.
I've had 2 Emperor 400's now for well over 3 years and they have never failed me yet. Clears up a dirty tank incredibly fast and leaves it sparkling! Only noisy if you don't remember to seat the impeller correctly or the intake tube. Overall highly recommended to anyone.
i like the filter, good solid workhorse, but it doesn't really suck up solids as well as i would like, water flows really well through it, but when debris flows by it just doesn't get sucked in like I would like
warning, it starts very loud and then quiets down after a while, be prepared for noise out of the box, but now it's perfectly silent
esparzar1 has used this product for 3 Years or More.
Overall Rating: 9.5/10
September 16, 2009
"The best....hands down"
This is a great HOB filter. It's fairly quiet and cleans excellent. I wouldn't recommend any other HOB filter. A little on the pricy side but easy to clean and works like a charm. I've had it up and running for over a year, my friend had it up and running for 3 yrs. That's 4 yrs and I never, ever had a problem with it.
The Emperor 400's push a huge amount of water with NO bypass. There is a huge area to put in whatever media type you want.The plastic the Emperor's are made of is not a flimsy plastic that can crack easy like the Aqua Clears are made of. The spray bars on the Emperor's work great, other HOB's do not have the spray bars. Some will say they are too load, all they need to do is adjust the intake tube and the Emperor's are quite.
Manufan has used this product for 3 Years or More.
Overall Rating: 9.5/10
August 29, 2009
I've been using these filters for several years, and they truly are the best. If used correctly, these filters will keep your tank(s) crystal clear. The extra media basket allows for so many different options, and when combined with the "E" cartridge this filter is phenomenal. Remember to clean the spray bar monthly to get maximum wet/dry filtration from your unit. Emperor filters are the best, work the best, and should be used by serious hobbyists looking for the best filtration.
One of the best HOB filters I have owned. Keeps my tank healthy, clean, filtered, and well maintained. It also has a bio-wheel driven by a spray bar which acts as a mini biological filtration untit. I couldn't have owned better filters.
Fishbulb2 has used this product for 3 Years or More.
Overall Rating: 7.25/10
January 3, 2009
"Just too loud"
Decent filter but just really way too loud. I don't believe biowheels are really necessary for a clean fish tank and this filter is really just all about the biowheels. Otherwise, you are just getting two little cartridges which are expensive to replace. The filter is also much much bigger than you might expect. The noise factor kills it for me. Marineland sent me another impeller and the noise issue didn't improve. I would stick with their standard line of penguin biowheel filters and skip this one.
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