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Rated 3.2 out of 5 by 53 reviewers.
Rated 5 out of 5 by Silent filter! When I bought my Marineland 55 gallon starter kit I got the 350 and it is very quiet compared to other filters I have had I also have a 200 and it is silent also! August 4, 2014
Rated 4 out of 5 by Gets the job done. This filter pumps out water a lot, has decent filter cartridges, has the amazing biowheel, has a handy mid-level intake strainer, and can reach down far with the extension tube. Only reason I didn't give it 5 stars was because it is also a very noisy filter, so I don't recommend putting it in a tartan that is in your bedroom, but I do recommend it in general. July 23, 2014
Rated 5 out of 5 by AMAZING filter for my 20 gallon!! This filter works great for my 20 gallon. I have the Penguin 150 and my water is CONSTANTLY crystal clear! I've never had problems with it and it's been lasting me for almost 5 years now! Very good product! I would DEFINATELY recommend this to a friend! July 15, 2014
Rated 1 out of 5 by Extermely noisy I just bought a penguin 100 and this filter just started to vibrate, I checked the impeller but the whole thing is in the right place and clean. I really waste my money in this fancy filter. April 26, 2014
Rated 5 out of 5 by AMAZING FILTERS I own 2 of these...one for a 20 gallon tropical tank and a 10 gallon African Cichlid fry tank...keeps water crystal clear...added a pack of bio stones to the fry filter and only have to clean every 6 weeks...WOULD DEFINATELY RECOMMEND TO EVERYONE...CAN'T WAIT TO TRY THE PENGUIN 350 WHEN WE GET OUR NEW 60 GALLON FOR OUR CICHLIDS!!!! March 30, 2014
Rated 5 out of 5 by Product does its job I wrote a previous review for the filter media, but it probably belongs here lol Anyways, the filter is really good. I'm impressed with it and have tried other filters and was not satisfied. While it might be more expensive then other filters, it's def worth the money. It makes my 10 gal look super clean. And the bio wheel is really a big help b/c that means i won't have to add any beneficial bacterial supplement ever again. Will warn you though, bio wheel may stop spinning but thats fine because water still runs threw the bacterial supplement that is on the bio wheel. You can replace if you want but it would be a waste of money and there wouldn't be any supplement on the new bio wheel. March 12, 2014
Rated 4 out of 5 by Ok, a bit noisy Daughter bought a Marineland 20 gallon starter kit. Very nice kit for the money. But the impeller is a bit noisy. It was set up today we will wait a and see for a week if the noise goes away. March 9, 2014
Rated 2 out of 5 by Good filter, but SO LOUD I don't know how the people in other reviews got lucky enough to not have noisy filters, but I nearly cried for the first 24 hours I had my 100. You could hear the thing across my house, on a different floor! I looked up the problem online and found many other people with a similar problem and found that some were able to solve the issue by lubricating the inpellar with Stress Coat and making sure to place it back into its place completely straight. I did this with no luck. Thank goodness my father is incredibly handy and was able to use a thin razor blade to shave off a teeny tiny bit around where the inpellar is inserted so that it could no longer hit the sides as it spins. This fixed the problem, but I don't think I should have to do minor surgery to make a filter run without excessive noise, voiding the warranty in the process. I'm happy with how the filter runs now, but my goodness, I don't think I'll ever purchase this filter again. March 3, 2014
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