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Thread: oxygen from floating plants

  1. #1
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    oxygen from floating plants

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    If there's just a tank of floating plants but no plants in the water column, will the water be just as oxygenated during photosynthesis? Assuming sufficient lighting. The floating plants can draw CO2 from the air.
    koah fong
    Juggler's tanks

  2. #2
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    respiration and expiration occurs in the leaves. so i don't think floating plants help except for those whose leaves touch the water. (ie: water hyacinth and lettuce maybe not. but duck weed/frogbit might)

  3. #3
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    i doubt it
    the stomata should be on the top to take in atmospheric co2, and release o2 there accordingly

  4. #4
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    well, I've noticed air under frogbit before. so I suspect that might be o2.

  5. #5
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    might be just air trapped from bubble from below

  6. #6
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    I read somewhere (hope I remember correctly) that in substrate-plants, the plants will transport the oxygen to the root area and surrounding substrate bacteria will benefit from it.

    Ever noticed that if you pulled out some plants from the substrate, some of the roots will still be bubbling. I noticed this in Hygrophila difformis.

    So I am not sure if this is the same for floating plants. So far did not noticed such bubbling in the Salvina or Frogbit.
    koah fong
    Juggler's tanks

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