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Phosphates

Discussion in 'General Discussion' started by moneypit, Nov 25, 2013.

  1. Nov 25, 2013 #1
    moneypit

    moneypit Inactive User

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    First off been having some issues with Cyano, nothing major tho. Checked on 11/13 and Po4- .64ppm, No3-5ppm, checked on 11/20 Po4-.46/No3-5ppm. Put a Phosban reactor on line last friday. Running 2 cups BRS High capacity GFO in a 550 reactor, checked Po4 tonight it was .07. I guess my question is this, How fast is GFO supposed to starting sucking the Po4 out of the water? I mean according to the dierections its was 4-8 weeks. Any ideas?



     
  2. Nov 26, 2013 #2
    Rdub

    Rdub Inactive User

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    Sounds normal so far. 4-8 weeks is a very conservative timeline. I would say within 2 weeks it should be down to the .05-.02 range.
     
  3. Nov 26, 2013 #3
    Rdub

    Rdub Inactive User

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    And the reactor makes GFO work faster, so that is probably expediting the process.
     
  4. Nov 26, 2013 #4
    danmgray Sioux City, IA

    danmgray Well-Known ReefKeeper

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    I may be off base, but I think GFO is very effective at removing PO4. Among other things, the rate of removal will depend on how much GFO is used, water flow rate through the reactor, and total volume. Reducing PO4 too rapidly can shock some of your livestock, so you may want to dial it back a little.
     
  5. Nov 26, 2013 #5
    moneypit

    moneypit Inactive User

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    Totally agree with both statements. I would love to eventually get No3/Po4 under control and stable via natural means i.e. refugium. I removed a cup of GFO and I'll see how that affects my Po4, if it goes up add some, goes down maybe take a tsp. or so out till it stabilizes.



     
  6. Nov 27, 2013 #6
    blackx-runner Cedar Rapids, IA

    blackx-runner Administrator Website Team Leadership Team

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    Exactly. on my system my phosphates are pretty high. I started using GFO, but I was burning through it pretty quick. I started small with around a cup and moved up from there. I was having to change it out weekly due to using small amounts for my water volume and levels of phosphates. They were definitely dropping steadily until the GFO was exhausted. I ran out of GFO before I got where I wanted and decided to find a cheaper alternative.


    My phosphate levels are probably steadily rising again. /DesktopModules/ActiveForums/themes/_default/emoticons/plain.gif



     

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