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Is the bottom filter (type of waterfall filter) true or false2007-11-24 23:37:31

A

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i would not use an under gravel filter they are to difficult to keep

clean as they suck all waste under the gravel the outside filter sucks the water through filters which take the waste out of the water,returns clean water to the tank which makes it the best one to use ..has to be big enough to clean all the water in the tank in about 2 hours. hope this helps

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if you want to know a little more about that type of filtration try this may help

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A water fall filter is generally a term used for a type of pond filter. It's not uncommon for ponds with Koi, and/or goldfish. The 2 major types of filter in freshwater tanks are under gravel (UGF), and hang on tank power filters (aka HOT). In general UGF have great biological filtration, but poor mechanical, and chemical. HOT filter are the reverse with great mechanical, and chemical, and poor biological. In general I recommend a HOT filter with a dry/wet wheel (aka bio wheel),or multiple filters. (Ideally with 2 filters one is changed regularly to keep the carbon filter fresh, and the other stays all the time.)

PS- There are also Cannister Filters, and Corner Filters. Corner filters might be an okay choice for under 10 gallon tanks. cannister filters are pricey, and are generally for 60+ gallon tanks.

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i think the water fall filter would be best. they are the easiest to clean and you want to keep your tank clean