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Thread: Cor 15 question/issue

  1. #1
    Regular Vistor
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    Cor 15 question/issue

    I have a cor 15 hooked to my Red Sea Reefer 525xl The pump is rated to 1500 GPH. Tank calls for 1080. The reefer has 3/4” lines. Does it seem reasonable that this pump would only produce 380 GPH as monitored by Apex 1” Flow monitor?


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  2. #2
    Frequent Contributor zombie's Avatar
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    Dec 2013
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    Denver, CO
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    A red sea 525 does not need anywhere near 1080 gph. That is their recommended pump rating on supplies tubing not flow after losses. That size tank needs 300-600 gph depending on your skimmer rating, desired refugium dwell time, etc.

    That low of a flowrate is expected if you use the supplied 1/2" green tubing that ships with the red sea. I have seen people get up to 700-800 with a cor20 (2000 gph pump rating) in those tanks when they retrofit the plumbing to be larger.

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  3. #3
    Regular Vistor
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    Thank you!


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