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Macroalgae nutrition

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  • Macroalgae nutrition

    First post.(Woot!) Hi everybody

    Anywho, I have a question/idea. I'm currently running a 10g macroalgae tank though the only algae currently in there is Caulerpa Sertularoides and I have some Botryocladia and Codium on the way. However I have been noticing some die-off on my caulerpa and water tests revealed that even with heavy feeding of frozen foods, I have zero nitrates and phosphates.

    My question is this: Would using water from an established fw tank as top-off water satisfy the need for nutrients (at least as far as nitrates and phosphates)? Is there anything that could go wrong with this that I should be aware of?

  • #2
    Zero N and P.....most plants/algae would die............
    You'd be fine from the FW, but keep the PO4 at or under 0.4ppm in marine tanks.
    NO3 can be about 5-15ppm range without much issue
    www.BarrReport.com

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    • #3
      Tom, would you be dosing KNO3 and KH2PO4 then for a marine seagrass/macro tank? Anything else?

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      • #4
        Originally posted by JByer323 View Post
        Tom, would you be dosing KNO3 and KH2PO4 then for a marine seagrass/macro tank? Anything else?
        Same deal as FW(traces), Alk and Ca++ are very important more many macro algae also.
        www.BarrReport.com

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        • #5
          Originally posted by Tom Barr View Post
          Same deal as FW(traces), Alk and Ca++ are very important more many macro algae also.
          I've never actually had a FW planted tank, about the time I was ready to get one my father got the saltwater bug, and we set up a reef instead, but I want the best of both worlds. I've been reading your stuff for a couple of years, I'm just trying to figure it out as far as a marine tank is concerned.

          I plan to run a kalk reactor.

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