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Reduce my Aqueon HOB flow


Karen B.
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Greetings!

I am trying to slow down the flow of both my Aqueon 10 & 20 HOB filter.
 
Both have a prefilter sponge, then a coarse sponge in the left chamber. The right chamber is split in half : aquaclear sponge at the back and bio balls in the front. Then the fall down is stuffed with a fine sponge/floss.
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I saw the water bottle trick (cut a cylinder off a water bottle and split it horizontally, then place it in the filter to create a half moon and divert the flow) and it seems to work great... until I close the lid. The lid seems to push the plastic a bit too tight and I wonder if that could be dangerous (stop the flow altogether or something?)
No lid with a gap
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with a lid. You can see how tight the plastic is.
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Is it possible to leave the lid partially opened or can it cause too much water evaporation and the beneficial bacterias could die?
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If you have any other tips, tricks or advices, I am listening. The tanks also each have a sponge filter.
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I saw someone using an intake pre-filter sponge on their return hose to diffuse the water and thought it might work for HOB filters too.

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I just cut a large pre-filter in half and again down the side.

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It diffuses the water enough for me to grow floating plants that don't like faster flow like water lettuce. 

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May work too well, judging by the massive amounts of plants covering the top. 

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  • 3 weeks later...
18 minutes ago, Schwack said:

I've only got an AquaClear 30 and I can't get the foam to stick. Any trick to it that I'm missing?

Mine stuck just fine without anything added. I cut the slit a little over have way through the square piece of foam. May it a tight fit at the edges as well. 

You may be able to use a day of super glue but may be a pain to remove later. 

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  • 4 weeks later...

I used the clear plastic strip  that comes with the glass covers. Cut to size and I slid it on the bottom of the outflow, it was a little loose so I softened it in hot water to tighten in.  The Aqueon comes with a blue baffle that slide in at the output.  I removed the insert and crammed a sponge there.

 

If this is confusing reply back and I will get some pics

Edited by rv5869
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