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Discussion Starter · #1 ·
I now know the answer to the often heard question in high school math class "Why do we have to learn this? When will I ever use it"

I have a penguin 200 bio-wheel filter that filters 200 gph. . How long will it take for this filter process 30 gallons?
 

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200gph/30 gallons equals filtering the entire tank 6.7 times per hour or it will take about 9 min to filter the whole tank once.
 

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Discussion Starter · #3 ·
Thanks Dutch ! I see the logic now.
 
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