This site is supported by the advertisements on it, please disable your AdBlocker so we can continue to provide you with the quality content you expect.
  1. We are after as many aquarium plant images that we can get, doing so will assist us in completing the aquarium plant database.

    https://barrreport.com/threads/aquatic-plant-images-wanted.14374/
    Dismiss Notice

Buoyancy

Discussion in 'General Plant Topics' started by Detritus Mulm, Oct 11, 2009.

  1. Detritus Mulm

    Detritus Mulm Guru Class Expert

    Joined:
    Jun 12, 2005
    Messages:
    147
    Likes Received:
    0
    Local Time:
    4:16 PM
    I'm redoing the office tank, so I bought some Riccia by mail order and got some Java Moss as a freebie. :) I'd been soaking them both in some Alum for a few days to make sure I did not get any unwanted visitors. They were both floating in their quarantine bucket, but when I put them in the tank after rinsing, the Riccia sunk to the bottom and the Java Moss floated to the top. The Riccia seems to be making an attempt to rise up, but is still sitting on the bottom.

    So did the Alum change the buoyancy of the plants or is it related to some other factor like PH or CO2?
     
  2. Philosophos

    Philosophos Lifetime Charter Member
    Lifetime Member

    Joined:
    Mar 12, 2009
    Messages:
    1,346
    Likes Received:
    0
    Local Time:
    4:16 PM
    Riccia should float; that's how it's found in nature. You've come across an interesting coincidence thought :D

    Check this out:
    Alum - Wikipedia, the free encyclopedia

    Then go look at the back of any water clarifier, and tell me what you see.

    Yes, you've changed the buoyancy of riccia with a chemical flocculant.

    Why the java moss went up is beyond me.

    -Philosophos
     
  3. Detritus Mulm

    Detritus Mulm Guru Class Expert

    Joined:
    Jun 12, 2005
    Messages:
    147
    Likes Received:
    0
    Local Time:
    4:16 PM
    I guess there was more 'crap' in the Riccia weighing it down, but it did not sink when it was in the Alum. It's slowly making it's way up now.
     
  4. Philosophos

    Philosophos Lifetime Charter Member
    Lifetime Member

    Joined:
    Mar 12, 2009
    Messages:
    1,346
    Likes Received:
    0
    Local Time:
    4:16 PM
    When it was in the alum it would've had a lower density than the solution, where as in your tank the solution density would've been lower causing it to sink. That it's rising now may mean a tendency to bond to other particles besides the plant. Let me know if your water looks any clearer by tonight or tomorrow ;)

    -Philosophos
     
  5. Biollante

    Biollante Lifetime Charter Member
    Lifetime Member

    Joined:
    Jun 21, 2009
    Messages:
    3,210
    Likes Received:
    1
    Local Time:
    4:16 PM
    Hi,

    For what it is worth, I suspect the alum level was a bit high or left in the solution for a little too long.

    I doubt it did any harm.;)

    I have seen the floating Java Moss, I don’t really know why, just every now and then they get that get up and go kind of attitude.:)

    Biollante
     
  6. Detritus Mulm

    Detritus Mulm Guru Class Expert

    Joined:
    Jun 12, 2005
    Messages:
    147
    Likes Received:
    0
    Local Time:
    4:16 PM
    The Riccia is back on top. It sat at mid tank most of the day, but I was doing some work in the tank and it got bumped to the top and is now staying there.
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice