Rated 1 out of 5 by JackMehoff Bio wheel is a 'gimick'
This filter is just gimicky.... The bio wheel is hardly as useful as ceramic rings or many other types of bio media... The volume is limited and not as customizable as other available filters of similar price.... I would skip this. There are much better options.
August 28, 2014
Rated 1 out of 5 by DK1906 Fourth Filter
I have just removed my fourth Emperor 400 from my marine tank. Each one has lasted about 8 hours before it started to vibrate and became deafeningly loud - to the point where my fish were becoming agitated about the entire tank vibrating. Not good - with each one, I can feel the tank physically shaking from these "filters.". My tank's parameters are excellent, and there is no reason this filter wouldn't work. I will never buy a Marineland product again. They are overpriced and just don't work.
August 25, 2014
Rated 3 out of 5 by grgryhff62 garbage
I bought this filter 4 my 55 gallon aquarium runs good for a couple of days then the flow rate slows down drastically the downspout next with a connect leak they are way too long so you have to trim them down I would never buy this product again and it is very noisy
April 8, 2014
Rated 1 out of 5 by MaddHatter Hunk of junk
I have, for now, a 350. It's a filter, many companies make them, and this one in no way stands out in filter performance. The only thing that stands out about it is that when I am home, it sounds like I am back at work at the factory. It might run silent for a couple days, then out of nowhere the impeller will begin making the most horrendous noises and no amount of messing with it will shut it up. My options are turn the filter off and kill my fish, or give them a heart attack and irritate the entire family. I'll go back to a cheaper brand, at least my others ran quiet.
February 26, 2014
Rated 2 out of 5 by Fishfortwentyyears Quality has taken a nose dive
These used to be great filters, now the quality has dropped significantly. The flow adjustment is gone, the wheels make noise, and it as a whole, is much louder than it used to be. The cover now also fits very poorly.
December 4, 2013
Rated 3 out of 5 by laroz My Third Try
The filter works well. The replacement filter media is very expensive and the impellers wear out alot. The replacement impeelers are not cheap either.
November 19, 2013
Rated 2 out of 5 by tripnndaayz The impeller fails
I have purchsed 3 of these filters (the 200 and 400) and 2 of the 3 have problems with the impeller rattling and banging around. Not happy with them at all!
November 16, 2013
Rated 1 out of 5 by slimpyman Worked Well the first month
The first month, this thing was relatively quiet and ridiculously POWERFUL! Its had crazy suction, cleaning power, BIOWHeel was spinning so fast, and way too good! As the months went by, I kept up with maintenance, and the thing kept getting louder, and less effective. Right now, at Month 9, my Emperor 280 is less powerful, and louder then my Penguin 200. As the thing is a shadow of its former self, its only a few weeks away from the trash.
October 26, 2013