PO4 problem - is food the source?

Discussion in 'General Discussions and Advice' started by lIghty, 27 Dec 2008.

  1. lIghty

    lIghty

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    Hi Friends,

    Been having some po4 problems, was using AM PO4 remover, but did find it to do much, and now after increasing my lighting the hair algae is going wild. I couldn't understand were it was coming from, but though i would take a pellet of food and chuck it in RO before testing, it measure about 5mg/L, and RO test O before.

    I'm using a high quality food, so i'm told, but this seems way too high.

    I will be getting some Rowaphos asap, but would like to hear your views!
     
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  3. HenkHugo

    HenkHugo

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    if food goes to waste in the tank it will add to the PO4 and NO3 levels in the tank. If you use frozen food always defrost it and get rid of the liquid.....
     
  4. lIghty

    lIghty Thread Starter

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    thx Henk, but the food doesn't hit the bottom, all of it gets eaten.

    has eayone else tested for PO4 like this before?
     
  5. Shaun

    Shaun Retired Moderator

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    Never tested the food for PO4 before, what is this high quality food you are using.
     
  6. Mike

    Mike Retired Moderator

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    Change food type and see if the levels get better, check your R/O and salt mix for P04 you need to find the source.
     
  7. scubaninja

    scubaninja

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    did you test your phosphates before you put more lights on? The phosphates might have been an underlying problem and with the increase in light the algae can now grow more, light being the dependant factor. 5mg/L for one pellet does sound very high to me, so i'd go with mike's idea and change the pellets for a bit. got to start eliminating things
     
  8. lIghty

    lIghty Thread Starter

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    Shaun, its Ocean Nutrition(sp), formulae.

    RO is fine, and use NSW.

    Scubs, PO4 always been high, like you said, its the extra lighting.
     
  9. Shaun

    Shaun Retired Moderator

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    Just wondering if the food was some fly by night high quality food.

    Best is to shorten light period and get some good PO4 remover. Tunze do some PO4 removal media 1 quick removal and another long period. I don't like the quick method but it may help to get it down and then go for the long one. Maybe change the food for a while. Best is always to try find the source of the problem.
     
  10. scubaninja

    scubaninja

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    legend:)
    I decreased my lighting quite a bit when my algae started going nuts, so i only have two t5s running. The ones directly over the coral, the others were just growing algae on the floor:)
     
  11. Hill

    Hill

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    Your best bet for the long term would be Macro algae or better an algal turf scrubber.

    The ATS seems to consume nitrates and phosphates the fastest. I have not used one yet but have been doing a little research and my next tank will have one. In the long term at lot cheaper than phosphate reactors and in my opinion a lot more efficient if used correctly.
     
  12. lIghty

    lIghty Thread Starter

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    Thx Hill, have chaeto in the sump with light.
     
  13. lIghty

    lIghty Thread Starter

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    going to get some Rowaphos tomorrow, how much would i need for a 580l system with a PO4 reading of 0.25 mg/l
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