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Eheim - Professional Canister Filters
The Eheim line of aquarium filters is by far the best on the market. They are the most durable, well made and efficient filters one can buy. The Professional series are somewhat more expensive than the Classics and I think there may be some, very little, media bypass compared to the Classic's zero bypass, but the ease of setup, use and general maintenance more than make up for this possible deficiency. The hose connectors and shut off valves are incorporated into a single, easy to use unit, the media is in hermetically sealed trays, and because of the ingenious design the heads can be removed without any water spillage at all. I hazard to say that you could open one of these on your living room carpet with no worries whatsoever. When cleaning one of the Classics I usually just remove the filter floss and pour aquarium water through the filter, hence backwashing any debris out into my sink. With the Pro series, one has to remove the trays and rinse the canister, but this affords a much deeper cleaning of the media. Currently I have Pros on all but one of my tanks and have never been happier with my water conditions. NOTE: these are fairly expensive filters, about twice the cost of the Classics by the time you fill them with media, but they are extremely efficient and very, very easy to use. You will never have one of these wear out. I personally own a 2224, 2226, 2228 and a 2229. The wet/dry (2229) is very expensive but an absolutely phenomenal filter. The most efficient filter I have ever used, and I have pretty much used them all. Hope this is useful...all I can say is the most important aspect of aquarium keeping, and the one you should be least willing to scrimp on, is the filtration system. Buy the best you can afford and you will not be disappointed.
I recently bought a 180 L tank along with Eheim 2222 model. It is a dream to own this filter, especially if you have a big tank or keep messy or demanding fishes like goldfish, then you got to own this filter. It is easy to assemble and doesn't require frequent cleaning, which allows water chemistry to be very stable. It is the BMW of filters. I personally felt it was a bit expensive to own this brand of filter; however, after using it for sometime I really believe it is worth every penny. Eheim is a world famous brand and provides spare parts for their filter. Which means you can use for couple years or more. Bottom line if you have a tank that is more than 100 L or keep demanding fish, buy an Eheim filter and you won't go wrong.
Although I agree on the capabilities of Eheim canister filters overall, and the performance of the 2227 wet-dry, it should be noted that this filter disrupts the performance of hang on protein skimmers because of the constant change in water levels. I had to remove it from my reef tank as a consequence. I would not recommend this filter where a protein skimmer is needed.
This is a review for the Eheim Pro II 2026. The Eheim 2026 is my first canister filter and I couldn't be happier with it. The installation is straight forward and everything looks and feels top quality. You should, however, have some basic hand tools available such as a hack saw to trim the spray bar and intake uplift tubes to fit your tank. I bought the Plus Kit which includes 2 boxes of EFMech ceramic rings and EFSubstrate for biological filtration. The filter took about 1.5 boxes of both media plus a blue coarse pad, a black carbon pad, and a white fine pad. After filling the filter with media, all you have to do is attach the hoses to the filter using the quick release valve and press the Priming button. When the button springs back, the draws water into the filter and starts to fill. Once it fills, all you need to do is plug it in. So far I'm very happy with my purchase. I highly recommend Eheim canister filters, especially the Pro II.
I recently bought an Eheim 2229 wet/dry filter and am extremely pleased with it. I would agree it is the BMW of aquarium filters. It is easy to assemble, easy to clean, and easy to maintain. It also is very energy efficient, considering the amount of water it processes. I've had aquariums since 1967 and have used all types of filters. This is one of the best, if not the very best. Highly recommended.
Well, a few years have passed since I first started using my Eheim Pro series filters and I must say that if I had it to do over again I wouldn't buy them. They are very good filters, don't get me wrong, but they have a few little idiosyncrasies that force me to remove them from my preferred list. These things can be hell to prime once they are set up. There are a couple of small parts that are prone to breakage or simply wear out and these parts are next to impossible to get. There is some, although not much, media bypass within the filter and last but not least, these filters are excruciatingly expensive. If I was starting over again, from scratch, I would stick to H.O.T. filters like the Aquaclears or Whispers or even Emperors or for that matter maybe even air driven sponges or UGF's , considering that you must do water changes no matter what filter you are using, you might as well stick to the cheapest, simplest filter in the first place and save all that money you'd otherwise spend on expensive aquarium filters for Caribbean vacations instead...hee hee.