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What is the best type of filter for a 125 gallon aquarium2007-11-24 23:41:01

I'm setting up a 125 gallon freshwater aquarium. This is the biggest aquarium i'm ever had. It came with an under gravel filter but it seems alot of people don't like them anymore. I was looking at an eheim pro II canister filter, is that a good bet? what if i used BOTh an under gravel AND a canister filter? What about wet/dry filters and UV sterilizers?

Answers:

Had the same questions you have right now, about 5 years ago. Undergravel filters are out dated. The canister filter is awesome, but make sure if you use just 1 filter that you have water circulation in all areas of the tank. Add an airstone or add a box filter too, so there are no "dead" areas of circulation. I have a 125 with about 12 discus and 50 tetras and a bunch of live plants. The Filter I use is the AquaClear 110. 2 of them evenly spaced to make sure circulation is equal in the tank. They cost about $60 each. Don't use the undergravel filter in conjunction with another type of filter, it will be easier to use the canister or box filter. A UV filter will make your tank almost completely immune to parasites. Get one if you can. They sell them as a suction cup filter/pump that hangs right inside your tank for about $100. Just put one in my 125, and what a difference! Good Luck!

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I use two Fluval 404's on my 125 and have been very happy with them.

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fluval makes one that's what i have on my 135 get the big one though.with this filter you wont need under gravel. uv sterilizer is not needed on freshwater i dont think. dont overcrowd it you'll be good.

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I have a 110 gallon tank and its running on the Eheim Cannister Filter. I havn't had any problems with it and my fishies really love the spray bar at the top. If you want to use both filters then go ahead, but the cannister is all I need!

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UV sterilizers are limited, they only clean the water that goes through them so there is always a chance for something nasty to reproduce before it gets into the sterilizer. I like filters with bio-wheel, and given the opportunity, I would put onea samll one at either end of the tank rather then one large one. That way you could change filter media at intervals and lose less beneficial bacteria. There would also be more current in the tank, doing a better job of cleaning the corners.

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I have a Fluval 404, an aquaclear 500 and an Emperor 400 on mine and I love the results. Good water flow and aeration and ease or maintenance. Depends on what type of fish you are going to raise. I wouldn't worry about UV sterilizers unless you are going to have expensive marine fish. Undergravel and a cannister would work, but you will have more maintenance issues with the undergravel filter.

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The Fluval FX5 is the way to go if you are wanting to go with a Canister Filter. Eheim is truly good equipment too, but check out this comparason between Fluval and Eheim.

http://www.discusforums.com/forum/viewto.