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Discussion Starter · #1 ·
planning on setting up a 20g long with scarlet badis and some nano schooling fish
im wondering if a internal filter would work instead of a sponge
something like this






or should I be aiming for less filtration since the fish are so small?
maybe a whisper 10?
 

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I guess the 20i would work. Are you just worried about the current the filter produces for the nano fish?
Good luck...
 

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It'll work, but i would go against it cause it takes up a lot of real estate inside a tank that size.
 

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I have that exact filter in my 10 gallon QT tank, its garbage. It takes up a lot of room and the flow is really slow. I think you'll have a lot of dead spots in a 20 gallon long. I have a 20 gallon long and I use a marineland penguin 200. They run about 30 bucks at your lfs.
 

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Sunsun 302 would be great. They are cheap and put out good flow. I had one on a 29g and had a koralia nano as well shouldn't be too much flow.
 

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Discussion Starter · #8 ·
was thinking about getting this
I already have a hw 302 on my 38gal and I think it might be a little overpowered for the fish I was looking at
 

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Discussion Starter · #10 ·
thanks
the one I linked is about 5x the number of gallons, so aslong as the intake/output is wide enough it shouldn't be too strong of a current(I hope)
 
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