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Thread: howdy from the uk - day one

  1. #141
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    Quote Originally Posted by Floyd R Turbo View Post
    There's an open and shut case...
    OK, here's a more pressing conundrum;

    This shot shows the light transmission through a FOUR day old screen with new, reflected cfl's (this side has just been cleaned);



    and in the interests of comparison, a reverse shot through the same screen using the LED UFO;



    so, after 4 days, there are parts of the screen that are not being bathed in light (and this is 4 days on one side only). The conundrum is "why do these sections continue to grow" for another 5 days in my case.

    while I'm here I may as well post the picture of what algae created organics actually looks like when aerated (not rinsed my screen after harvest for last two cleanings). The skimmer goes crazy for a while, then these extra large bubbles subside;


  2. #142
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    Ok, here's my spin on this phenomena. The light deprived algae turns heterotrophic in the presence of exudates from the screen above, which is green and growing well. Hence "white" algae which is not noticable if you clean both sides of the screen or the screen is cleaned back to the canvas;



    This would also reduce skimmate production from some systems in my view. I may be barking up the wrong tree but my conclusion seems to tick all the boxes. The answer to this would be "increase light", reduce screen cleaning periods (even further), increase the screen size relative to guidelines or give up on the idea that the screen will produce foods for corals etc. Any thoughts?

  3. #143
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    24hrs on and it's still there (green taking over though)


  4. #144
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    Another 24 hrs, it's almost gone, for now;




  5. #145
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    Ok, found evidence that algae can indeed survive dark periods buy organic uptake;
    http://algaescrubber.net/forums/show...2063#post32063

    And to show that the white has gone [80 hrs after cleaning];


    Sorry if you folks are finding this boring, I don't

  6. #146

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    I'm happy that you're having a nice growth!
    And that the Green covered the white
    would be nice some pics without water and light, to see the real green!

  7. #147
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    Quote Originally Posted by itzrulez View Post
    I'm happy that you're having a nice growth!
    And that the Green covered the white
    would be nice some pics without water and light, to see the real green!
    Your wish is my command; 5 day screen


  8. #148

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    nice growth! ;D
    a side picture would be nice too...
    just to show the thickness!

  9. #149
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    Quote Originally Posted by itzrulez View Post
    nice growth! ;D
    a side picture would be nice too...
    just to show the thickness!
    This shows the screen at 16 days, you can see how effective the light blocker is;


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