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Nossie
Hero Member
    
Karma: 481
Posts: 5469

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Re: biological filter aids?
« Reply #8 on: May 17, 2010, 03:28:36 PM » |
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Actually, an undergravel filter is not to recommend... It's meant to create a suction in the tank that will draw the dirt and debris into the gravel, meaning that you'll have to clean it extra well. This filter will, btw, not deal with the waste in any way, it simply draws the bigger pieces of dirt down and lets it decay in your tank. It also disturbs the plants when pulling the water down through the roots, so if you keep live plants, that's another reason not to get this filter. It would be more suitable for a smaller tank where any other filter may not fit. It could also work as a secondary filter, if you have an internal power filter or similar as a primary one. Otherwise, I think you should really choose some other method of filtration 
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