How often to change GFO

Discussion in 'Water Chemistry' started by tubz, Sep 27, 2012.

  1. tubz

    tubz

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    I recently got a BRS dual reactor and am running gfo in the one side. How long does it stay working before it needs to be changed out for fresh stuff?
     
    tubz, Sep 27, 2012
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  2. tubz

    Salty B

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    I would change mine monthly. Depends mostly on the conditions of your tank.
     
    Salty B, Sep 27, 2012
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  3. tubz

    Ulta REEFER

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    I change it when I notice algae building up quicker =P

    They say monthly tho ;)
     
    Ulta, Sep 27, 2012
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  4. tubz

    Nonfamous

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    Depends. I change mine every two weeks running Phosban brand. I bought some ROWAphos today and I plan on leaving it in for a month. Stuuf aint cheap I'll tell ya! 100ml for $19.00.
     
    Nonfamous, Sep 28, 2012
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  5. tubz

    Amba Ol' Salty VIP Member

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    Every 3 weeks
     
    Amba, Sep 29, 2012
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  6. tubz

    tubz

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    Well I changed it today, it has been around 3 weeks and I noticed that rust colored water was starting to come out of the canisters.
     
    tubz, Sep 29, 2012
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  7. tubz

    ccCapt Reef Hacker Moderator

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    If you are seeing rust colored water, you are running too much water thru the reactor and it's breaking (grinding) the GFO down into dust.
     
    ccCapt, Sep 30, 2012
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  8. tubz

    Nonfamous

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    Just a note on the ROWA, it is much finer than the Phosban. It's also suggested that it should fluidize more than the Phosban. Since it is fo fine, it takes a lot less flow to do so. It's kinda hard to adjust it correctly with the Phosban reactor I am running. Claims for this stuff read up to 7 months! It is also claimed that once it reaches capacity it won't release the stuff back into the water. Theoretically you could forget to change it and not worry about it.
     
    Nonfamous, Sep 30, 2012
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