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Discussion Starter · #1 ·
I have a Fluval FX 4 running on a 90 gallon tank. Is the FX 4 sufficient long-term for 12 to 14 peacocks and haps under say 7 inches?
 

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What is the GPH? Shoot for 8X to 10X GPH turnover.
 

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Discussion Starter · #3 ·
I believe the FX 4 has 700 GPH without media. I was thinking about adding another canister as a backup.
 

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Always good to have a 2nd filter in case the first has issues.
 
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