Just breathe...

Discussion in 'General Discussions and Advice' started by coswecanfly, 10 Jun 2011.

  1. coswecanfly

    coswecanfly

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    Coming from a "freshie" background, I was wondering:

    Why do marine aquariums not have airpumps and stones? Where does the oxygen come from?
     
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  3. Tremayn

    Tremayn

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    because:
    1) looks ugly
    2) air stones degrade very quick in SW
    3) some fish and corals dont like it

    Oxygenation comes from surface agitation, water moving through the overflow into the sump, macro algae and the skimmer (lots of tiny bubbles :p)
     
  4. mariusmeyer

    mariusmeyer

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    As Tremayn said, there is enough equipment in a marine tank that creates sufficient oxygen.
     
  5. Tremayn

    Tremayn

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    oh and also when bubbles reach the surface and burst, it causes a spray of water which will crystallize into salt. Salt creep aint cool
     
  6. butcherman

    butcherman Moderator MASA Contributor

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    A skimmer also ;)
     
  7. coswecanfly

    coswecanfly Thread Starter

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    But I don't have a skimmer... Will the overflow from the chambers be sufficient? Also my return makes the surface of the water 'bulge' a bit... :whistling:
     
  8. butcherman

    butcherman Moderator MASA Contributor

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    should be fine. got a pic of the waters surface?
     
  9. coswecanfly

    coswecanfly Thread Starter

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    Will take a pic after intorducing LR tonight... Can't wait... SOOOOO EXCITED... :thumbup: I'm going to have ROCKS to watch... :biggrin:
     
  10. mariusmeyer

    mariusmeyer

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    LOL. A feeling all of us can relate to.
     
  11. butcherman

    butcherman Moderator MASA Contributor

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    just keep watching... you might fond one or two surprises
     
  12. leslie hempel

    leslie hempel Moderator MASA Contributor

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    water surface movement.. EG a goldfish bowl with no water movement will only allow X amount of air to statically oxygenate the water but taling a pump what you are eseniaally doing bu forming bubbles is creating a wiser surface area as the entire bubbles circumference is now in contact with the water and can air can intergrate into it..

    if you were to simply take a pump and point it up at the water surface you get the same thing.. thye more bumps ripples on the surface the more surface area..

    PS: while a skimmer is a useful tool you should have.. it should not be depended on for stocking density where oxygen requirenments are concerned (a common occurence we are all guilty of) as when the power goes out you will loose fish due to inadequate oxygen levels..

    rather stock conservitivley
     
  13. coswecanfly

    coswecanfly Thread Starter

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    It's a 25l so I'm not going to stock too much...
     
  14. RiaanP

    RiaanP Moderator

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    the air bubbles from an airstone does not really help with oxygen entering the water. It is the water circulation it creates, by pulling water up with the bubbles, that does the O2 thing. The surface is the place for gas exchange. And you need to get the water that already exchange whatever gases they want to be moving along. Keep on moving - nothing to see folks. So that the next "group" of water can be exposed to the surface and get their change to do the exchanging they want.

    Also bubbles in saltwater causes salt creep. Everywhere. Salt creep, amongst other things are excellent conductors of electricity, leading to your tank chocking you for no apparent reason. Especially from the light fittings.
     
  15. coswecanfly

    coswecanfly Thread Starter

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    Thanks all... That really clears things up nicely... :)
     
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