Who uses GFO?

Discussion in 'Water Chemistry' started by LoJack, Sep 16, 2010.

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  1. LoJack

    LoJack Sea Dragon

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    Thompson, Manitoba, Canada
    Hey there all,

    Just a question for you GFO users ... how long does the media last before it needs to be changed. I'm buying a reactor and some media, and want to know how much GFO to buy ... based on how often I'll need to change it.

    Thanks guys!
     
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  3. evolved

    evolved Wrasse Freak

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    There will be much variance in the answer to this question, as it's dependent upon the size of your phosphate source.

    For me, it takes about 3 months before I start to see a rise in levels, indicating a change is in order.
     
  4. steve wright

    steve wright Super Moderator Staff Member

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    I use Rowaphos

    80 gallon reef tank - I use approx 200 mls and change it monthly ( reminder set on mobile phone)

    I buy the 1000ml container of Rowa and use roughly 1/5th each time ( hence approx 200mls)
     
    Last edited: Sep 16, 2010
  5. blackraven1425

    blackraven1425 Giant Squid

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    I use about 1/2 cup, monthly, on my 65g system.
     
  6. Dr. Bergeron

    Dr. Bergeron Peppermint Shrimp

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    I also use about a 1/2 cup and change it out every month or two, but I have a low phosphate level.
     
  7. LoJack

    LoJack Sea Dragon

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    ok ... at least that gives me a general idea, thanks everyone!
     
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  9. 2in10

    2in10 Super Moderator Staff Member

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    I use 1.75 cups every 6 weeks