Diatoms and Hair Algae

Discussion in 'General Discussions and Advice' started by Marcd50, 26 Mar 2013.

  1. Marcd50

    Marcd50

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    Hi, two weeks ago I had a diatom bloom with some reddish colour algae on the substrate, after a week or so it went away, with the help of my lawnmower bleeny i think. Was clear for a week, now its starting again.

    My tank is going on 4 months old, I do weekly water changes of 20l, its a boyu TL 550, I have Activated carbon in the first chamber by overflow, under that Phosgaurd, under that Chemi pure elite, I have 15kgs LR.

    The corals are all looking happy and healthy, I only have two clowns and a lawnmower blenny, two cleaner shrimp and two hermits.

    ive also had hair algae which is now spreading to all the LR from the first month.

    all test i do look perfect, going to try the bio cubes now.

    Any other ideas, or something I'm doing wrong, maybe I should add that I try pull out as much of the hair algae when I do a water change.

    thanks
     
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  3. MistaOrange

    MistaOrange

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    What are your parameters?
     
    Last edited: 26 Mar 2013
  4. Marcd50

    Marcd50 Thread Starter

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    Ammonia 0
    Nitrite 0
    Nitrate 0
    Phosphate 0
    SG 1.024
    Temp 25.8

    tests done with salifert and red sea test kits
     
  5. Express Reef

    Express Reef

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    Please post a pick off the reddish colour algae... is it not more a slime? Is it only on the substrate? I dont think it is algae...
     
  6. Drewton

    Drewton

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    Could be cyanobacteria...
     
  7. MistaOrange

    MistaOrange

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    If it is cyno it could be flow, too little flow will cause cyno.
     
  8. Express Reef

    Express Reef

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  9. Drewton

    Drewton

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    I always get a diatom bloom after a waterchange the bigger the change the bigger the bloom.
     
  10. Marcd50

    Marcd50 Thread Starter

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    Should I stop doing weekly water changes?
     
  11. mandarinman

    mandarinman

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    i would do 10% changes twice a week
     
  12. Charl_Stanhope

    Charl_Stanhope

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    I wouldnt stop doing the water changes. Are you doing it with NSW or do you mix your own saltwater? If you mix your own, check the TDS of your R/O water. If you use NSW, check the phosphate and nutrient levels of the NSW . Your live rock might also release nutrients. Do you change the carbon regularly?, the reason you have to change the carbon is that it gets exhausted and wont absorb anything any longer and will leach what is absorbed back into the water.so changing it regularly is a much.

    You levels are showing zero value because the algae is consuming the nutrients and your test kits will not detect the nutrients/phosphate levels.
     
  13. Marcd50

    Marcd50 Thread Starter

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    Here's a pic of the substrate

    image.jpg
     
  14. Marcd50

    Marcd50 Thread Starter

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    TDS is 0, mixing Seachem reef salt, change carbon once a month
     
  15. Express Reef

    Express Reef

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    That is cyanobacteria, its normal most tanks go thru it, will go away in some time
     
  16. MistaOrange

    MistaOrange

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    That's cyno how you may need to increase or change your flow direction.
     
    Last edited: 28 Mar 2013
  17. Drewton

    Drewton

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    What are you using as a substrate? looks very fine, is it playsand?
     
  18. Drewton

    Drewton

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    What type of rock are you using, is it local or imported? how long did the tank cycle for before the bloom, and did your rock come from another older tank?
     
  19. Marcd50

    Marcd50 Thread Starter

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    The sand is aragonite mixed with aragalive, the rock is fiji according to my LFS, the tanked cycled for over a month and during that time I had the brown diatom bloom which cleared up within a few days. thsi has appeared now after the tank has been going for close to 4 months.
     
  20. Charl_Stanhope

    Charl_Stanhope

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    How much flow do you have in your tank? Might be a few dead spots in your tank. So detritus might settle on your rock and thus fueling the nutrients in your tank. Your husbandry sounds good, fiji rock is nice live rock. Maybe send us a full tank shot. Do you still have the bio balls and ceramic rings that came with the TL550? Do you rinse the sponge. Sorry I am bombarding you with all these questions.I struggled with cyano etc for a year when I started off with my TL550.
     
  21. dallasg

    dallasg Moderator MASA Contributor

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    ok the image suggests cyano as everyone has mentioned, but it looks like its more of a bacteria issue with some excess nutrients, you can suppliement with special blend and it should work
    you can add an airstone in the sump to help elevate O2 and go from there
     
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