How to reduce flow of Fluval U2 internal filter

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Steven 1

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Feb 27, 2014
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Hi. I have a Fluval U2 in my 10g now. I think it's meant to be used in up to 30g tanks. I have a 10. So, I would like to figure out how I can reduce the outflow. I thought of not using the bio-media and putting more sponge material in the middle. Would that do anything?

I appreciate any help you can give me. Thanks.
 

Star_Rider

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Dec 21, 2005
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U2 has some flexibility in flow control in perms of output positioning.. have you played with that to see if it make a diff ?
I often run over rated filters on many of my tanks flow is usually not a real issue.
the filters usually slow down in time especially after some gunk build up in them ;)
 

Steven 1

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Feb 27, 2014
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I've got the output on the lower output, and it seems less powerful, although more powerful than I would probably like for the plants. I thought more about putting more sponge into the media section of the filter and I thought that that might put too much of a load on the impeller/motor.
 

viboy

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Mar 15, 2002
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I don't have one of these filters but could you put a small sponge on the end of the output to diffuse the output? You might have to zap strap it to keep it in place.
 
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