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  • Page 4 of 4 FirstFirst 1234
    Results 61 to 62 of 62

    Thread: Aquaponics, sure, why not

    1. #61
      Paultergeist is offline Senior Member
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      Join Date
      Apr 2009
      San Diego, California
      Quote Originally Posted by kimini View Post
      Oh I don't disagree at all, and in fact that was the point of the experiment. I wanted to see how well the plants would do in the pond water without altering the water chemistry, which could harm the fish. As suspected, when used as-is, it didn't go well. Traditional raised planters will be built and pond waste will be drained off to them. Pretty much the best of both worlds.
      Based on only a very limited effort on my part, this was my experience as well. The fish prefer nitrogenous wastes to be as low as possible and pH in the range of 8, while the plants want copious nitrogen and require much lower pH for efficient uptake. I did not pursue the idea very far, however. I still wonder if a large bed of submerged-root plants could be utilized effectively to support a pond with no other bio-filtration present? The idea would be to simply have the plants scavenge most of the ammonia before bio-conversion (to nitrite) even took place.....just pondering......

    2. #62
      Cecil is offline Senior Member
      is Koiphen fan
      Join Date
      Nov 2011
      Ligonier, Indiana USA
      There are plants that are very good at up taking nitrogenous wastes including ammonia. Duckweed comes to mind and I know there are others.
      The risk I took was calculated, but man am I bad at math!

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