Grape/red looking Derbesia Algae

Discussion in 'Urgent Help Needed' started by audioworx3, 5 May 2009.

  1. audioworx3

    audioworx3

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    hi guys, i'm new to the world of marine fish tanks, one of my friends helped me set it up.
    Everything was fine then we started experiencing this problem of algae taking over!

    [​IMG]

    its a soft slimly algae which can be picked of the rocks

    What can i do to eliminate it, please excuse my ignorance i'm very new to this still learning as i go a long!

    Thanks Amish
     
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  3. Tony

    Tony

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    It looks like a colour variant of derbesia. Most algae stem from excess nitrates and phosphates. What are your readings
     
  4. lanzo

    lanzo Sponsor

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    WELCOME TO MASA

    seesh!!!

    Like tony said...what is your phos and NO3 readings?
    Do you use ro water?
     
  5. audioworx3

    audioworx3 Thread Starter

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    whats the best kit to get to test the water?
     
  6. audioworx3

    audioworx3 Thread Starter

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    :thumbup: thanks, for the nice welcome! called the local fish shop, and they only have the nitrate test kit in stock, should i get it and test it so long?

    Another thing is we have a metal haladie light above the tank, could it maybe be too close?
     
  7. Mekaeel

    Mekaeel Moderator MASA Contributor

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    Welcome to MASA audioworx3. :)
    Speak to Lanzo regarding test kits. He is a sponsor and will beable to help you out.
    The light wouldnt cause the algae, but as a thumb rule, the MH should be no lower than 20cm's above the level.
     
  8. Tony

    Tony

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    Try and get Elos or Sailifert. Speak to Lanzo who posted a few posts up. He has stock and couriers around the country. Maybe one of the PE guys can point you in the direction of a decent LFS. In the meantime get some phosphate remover like Phosban, rowaphos etc. The halide won't pose a problem if you have high nutrients
     
  9. audioworx3

    audioworx3 Thread Starter

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    ok so i'll test the nitrate later, and check i'll also start a new thread with all the details of my tank its a 400l story with external sump protein skimmer etc etc, its veiwable from both side, i'd also like to know what fish and corel i can add, because it looks empty, its only the algae filling it up :lol:
     
  10. Tony

    Tony

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    Great minds think alike:razz:
     
  11. jacquesb

    jacquesb Retired Moderator

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    A VERY WARM WELCOME to MASA, AudioWorx3! Great to have you on-board!
    It seems that my fellow members have been looking after you! ;) AWESOME!

    Please elaborate some more on your tank? Post some more pics of your tank's sump, please?
     
  12. Warr7207

    Warr7207

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    That looks like some nasty stuff :(
     
  13. audioworx3

    audioworx3 Thread Starter

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    thank yeah they have! Really friendly forum guys!
    I live on car forums and they not as easy going thats for sure!
    I will post some pictures later, will take new ones, its sad the tank has so much potential, and the algae ruins it!

    I tried syphoning some of it out this evening. There is still too much thou!
    I also tested the nitrate it seems spot on according to the test!

    Should i just go and get the phosphate remover?
     
  14. audioworx3

    audioworx3 Thread Starter

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    here are some more pictures

    [​IMG]
    [​IMG]

    and i did a nitrate/nitrate test
    [​IMG]

    its safe
     
  15. jacquesb

    jacquesb Retired Moderator

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    Hi AudioWorx3 - unfortunately that nitrate test is not really one of the best types.... not really accurate....
    BUT, it's usually a case of HIGH PHOSPHATES that feeds nuisance algae/cyano bacteria.....
     
  16. scubaninja

    scubaninja

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    welcometomasa

    nasty stuff algae, and it seems you only have one Powder blue and a clown in your tank? this doesnt relate to your algae problem just interested:)

    Back to the problem, what skimmer are you using? how old is your rock? was it cured before you use it because if you dont have a large bioload and i'm assuming you have a decent skimmer the problem would be in your rocks. DEEP i your rocks. One problem we have with nuiscance algae is that if we test our water for PO4(phosphates) it sometimes shows a very low reading yet we have this algae problem? what happens if the PO4 in your rock is immediately used up by the algae and doesnt make its way into your water column, the detritus could be in your rocks(possibly not by your own fault) because of a bad internal flow (too little or placed badly so the detritus does not go over your overflow) or possibly due to (read this a little while ago and sounds interesting and promising) kalk combining with your PO4 and dropping down into your sand or rocks. But no worries, these things can be fixed, relatively easy for some:p

    But for now you have a couple of options:
    Remove rock and cure it in a bin of sorts,
    Let the algae use the nutrients and get rid of itself,
    or continually pluck it and getting rid of it might take longer.
    What i would suggest if you had the time, is that you take it out. It fixes the problem faster IMO. You take it out, scrub the heck out of it and remove all you can, blow the heck out of it in a container to free whatever detritus you can from inside the rocks, and then place it in a dark plastic bin(food grade) in the sun(or place heaters in there) outside with a high flow pump inside. With no light the algae left will die and fall off the rock and you can then just wash it off. You would need it to be nice and warm in there as this helps speed things up(beware the smell is something furious) and within a month maybe it will be sorted. This is my opinion and it worked for me and i dont have an algae problem so i'm sure it will work for you. Its all up to you
     
  17. Tony

    Tony

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    What are your nitrite readings?
     
  18. trad

    trad Fish, thats the word!

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    Get some rowaphos and a reactor today I promise it'll be the best R1500 you spend. most guys with really clean tanks are running them.

    But also make sure your cleaning your gravel etc
     
  19. audioworx3

    audioworx3 Thread Starter

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    will this plan not kill all the life in the rocks?
     
  20. audioworx3

    audioworx3 Thread Starter

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    Nitrate was 0
    nitrite was 0-0.5
     
  21. Tony

    Tony

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    I was doing some research in Julian Sprungs bokk on aglae and the alga is called asparageniensis. Form his personal observation this alga is fuelled/aggravated by nitrites
     
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