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Black brush algae

Discussion in 'General Aquascaping and Planted Tank Discussions' started by bradster85, Apr 19, 2012.

  1. bradster85

    bradster85 New Member

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    What is the best way to get bba out of a tank and what causes it. Most of my plants have bba on them and makes my tank look neglected. I have a mh and two power compacts over the tank ample water flow I dose ferts twice weekly which has resulted in no problems. Any help would be great
     

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  2. Flo

    Flo Aspiring Aquascaper

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    potenzial causes: low Co2/high light.
    bba growth on plants are not so easy to remove. trim the infected leafs off, wood and glass can be cleaned with a razorblade. but your main problem is low Co2 and to much light for sure.
     
  3. Shadow

    Shadow Moderator Staff Member

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    Need more info on your setup, CO2, tank dimension, flow rate, etc

    The only way to remove BBA on plant is by trimming. If you want to clean wood or rocks using blade, better take it out from the tank, because any small cut of BBA will grow even worst.
     
  4. Garuf

    Garuf Moderator Staff Member

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    Spot dosing with a pippete and excell over the period of a couple of weeks will see it all off but you then need to consider maintenance, increase the co2 and give the tank a good clean, I find bba is often associated with exceptional build ups of mulm.

    As shadow says, trim the plants and hard, they'll come back much better for it and keep the co2/flow high.

    Ferts aren't related to bba, but I find every day dosing gives me better results much less bottoming out from the plants.
     
  5. bradster85

    bradster85 New Member

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    Flo. Should I try reducing the hours the light is on for. How many hours should a 150w mh and 2 18w power compacts be on for in a day. With no co2
     
  6. plantbrain

    plantbrain Aspiring Aquascaper

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    You have MH's and PC and no CO2?

    Yikes!!
     
  7. Shadow

    Shadow Moderator Staff Member

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    150W MH without CO2 injection = trouble. YOu can either start injecting CO2 or replace your MH light
     
  8. Flo

    Flo Aspiring Aquascaper

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    100% agree.
     
  9. bradster85

    bradster85 New Member

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    What type of lighting do you recomend
     
  10. Shadow

    Shadow Moderator Staff Member

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    I would recommend fluorescent light either T5 or T8 or power compact.
     
  11. bradster85

    bradster85 New Member

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    Why didn't I get bba before I have the same fish plants and lights with the same duration of light this setup has been going for 8 or so months
     
  12. Garuf

    Garuf Moderator Staff Member

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    Are you running low tech or high tech? What's your goal? it's hard to diagnose it specifically, just the causes we know it reacts too.
    8 months does lend credence to my initial thought that it could be related to high amounts of mulm but as said it is a co2 related algae.
     
  13. bradster85

    bradster85 New Member

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    What would you class as lo tech or high tech I don't have any idea
     
  14. ShadowMac

    ShadowMac Moderator Staff Member

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    low tech tend to be tanks with low lighting, no pressurized CO2, maybe DIY/yeast CO2, and low light plants light crypts, anubias, ferns

    high tech tanks will have higher lighting and require pressurized CO2. They generally are setup to house more demanding plants.
     
  15. bradster85

    bradster85 New Member

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    Thanks shadowmac I would say my tank is lo tech
     
  16. Shadow

    Shadow Moderator Staff Member

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    with 150W MH, that is not low tech.

    Everything is control by light.
    - High light intensity = high tech. Plant grow fast (including algae :p), plant need more nutrient (N, P, K , trace and CO2). Without dosing nutrient, plants will stunt and algae take over because it does not need much for algae to grow.
    - Low light intensity = low tech. Plant grow slow, thus dosing nutrient is not necessary.
     
  17. prabhuram_11

    prabhuram_11 New Member

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    I had this issue and 2 days complete blackout worked fine...it all got cleared in 2 days..make sure you do a 1/2 tank water change after the black out..
     
  18. Shadow

    Shadow Moderator Staff Member

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    I do not think blackout work on BBA
     
  19. Garuf

    Garuf Moderator Staff Member

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    Nope, you're right, black outs don't work on BBA.
     
  20. CatfishSoupFTW

    CatfishSoupFTW Aspiring Aquascaper

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    i had a HUUUGGEEE issue once upon a time with BBA, and i solved it with dosing my tank with excel liquid carbon, and i know it may sound weird to some, but it worked. worked real well, 9 hours or lighting, and usual water changes, and some siamese algae eating fish and bam. though the excel helped more than the siamese. (true siamese)
     

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