Brown Algae On Lugwigia Repens Red

Discussion in 'Aquarium Plants' started by jscherman2, Apr 24, 2018.

  1. jscherman2Valued MemberMember

    Hi All,

    I'm experiencing some brown algae, it only seems to be on my lugwigia repens red though. I tried wiping it with my fingers but basically comes right back, seems to be getting a little worse too. Any ideas on why this would just target this plant?

    The tank has been up and running since December of last year, slowly started putting plants in around end of Jan/early February. The repens are one of the more recent plants which I put in about 3-4 weeks ago.

    Think I need more light, less light, better light? Wavemaker for a little more flow?

    Tank setup:
    45 Gallon (36 length, 24 tall, 12 depth)
    Penn plax 1000 canister filter(Media: Sponge, pond sponge, poly fill, bio rings, matrix)
    Emperor 400 (Media: Matrix, bio rings, and filter floss)
    36" Beamworks EA FSPEC LED light (Times on: 9am - 2pm, 4pm - 9pm)
    2 bubble stones
    Tank kept around 78 degrees
    Weekly water changes (25% - 50%)
    Flourish dosed 1 - 2x a week
    Excel dosed sporadically
    Osomocote plus root tabs (4 in the tank right now)
    No Co2.

    Fish Stock:
    - 5 albino cories
    - 1 bristlenose pleco
    - 1 electric blue acara
    - 2 opaline gourami
    - 6 checkered barbs
    - 6 cherry barbs
    - 2 nerite snails

    Plant list:
    - Lugwigia repens
    - Java moss
    - Java Fern
    - Anubias Nana petite
    - Jungle Val
    - On the way (S repens and Amazon Swords)

    Thank you!
  2. leftswerveWell Known MemberMember

    If your substrate is sand or any color other than natural, OR you have non natural ornaments, any of that could contain high amounts of silicates. Silicates are food for brown powdery stuff.

  3. jscherman2Valued MemberMember

    Seems I left out my substrate! I use fine black diamond blasting sand, about 40lbs worth. I have no decorations other than the plants and driftwood.

    Weird that it's only on the repens red though. So basically could be the BDBS substrate contributing to this? Any proven way to lessen silicates? Is it just more frequent water changes?
  4. leftswerveWell Known MemberMember

    Well, i was just throwing something out there for you. Your source water could even contain high silicates.
    Is it possible you just can't see it as well on the other plants? What leads me to believe it is brown algea (some call it diatoms on here), is that you can wipe it off easily and it comes back.
  5. TexasGuppyWell Known MemberMember

    My water source is 3.5ppt (m?) silicates. SeaChem phosfree is supposed to remove it after a few days, but don't leave it in, since it removes phosphates before it removes silicates...
    Do it after water change and don't fertilize for 3-4 days you are running it. But, if you water has it, it will come back.
  6. jscherman2Valued MemberMember

    Thank you for the response!

    I've checked my others and don't immediately see it, unless it's just very little on them. Thought maybe because they're pretty much the tallest plants in the tank right now and in the back/center of the tank may be due to being closer to the light.
  7. jscherman2Valued MemberMember

    I'll check this out. Is there a specific test kit for silicates in water?
  8. -Mak-Fishlore VIPMember

    There are a ton of causes for algae, and it's hard to diagnose a lot of the time. The only sure thing we can say is healthy, actively growing plants do not get algae.

    Ludwugia is a step up from the easier plants you have, so they need more light, ferts, and CO2. Try to concentrate on growing healthy plants, and algae will go away on its own. I would start with getting a more complete fert and dosing excel daily :)
  9. TexasGuppyWell Known MemberMember

    From what I've read, there aren't really any accurate tests for silicates. I've read a few that just ran the phosfree for a week or so, or just waited it out, removing the diatoms carefully from the tank each time. Lots of people say it will go away after a few months, and it did in my smaller 10, but so far, my 55g is not getting much better. But, that tank has plants and I dose ferts. Diatoms require silicates to grow/survive, so I'm assuming since my 10g cleared up, my 55 should eventually... I did run the phosfree for several days, hard to tell if it helped, I think I need to run it longer but it was a temp setup on a powerhead.
  10. jscherman2Valued MemberMember

    I ended employing a few oto cats and they got the job done!

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