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Green Hair Algae Question

Discussion in 'General Plant Topics' started by mexicatz, Aug 28, 2016.

  1. mexicatz

    mexicatz Junior Poster

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    I've been noticing green hair algae popping up in my tank.


    Specs:


    7 hr photo period with planted+ using 2 window screen to cut par to about 22


    nitrates 5-10 ammonia/nitrate 0


    1/8 kno3 1x a week


    1/16 kh2po4 1x a week


    2ml flourish 1x a week


    1/4 equilibrium on water change


    2ml excel daily


    50% weekly water change


    I was wondering if anyone knows the method to combat it. The tank is only filled with mosses and anubias, with the anubias showing GSA. I started to add a little more kh2po4 to reduce the GSA but the hair algae was present before that. I just restarted EI on this tank could that be the issue?


    Isn't really a full blown outbreak yet.
     
  2. Pikez

    Pikez Rotala Killer!
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    Tank with 22 PAR and so few, slow growing plants does not need EI. Bigger water changes, feed the fish, dose with just K2SO4 and may be a little iron or flourish. Adding a CO2 system will help.
     
  3. mexicatz

    mexicatz Junior Poster

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    If I stop ei dosing / excel, should I still be doing weekly water changes? Or will this cause BBA from co2 fluctuating


    Also, if I no longer dose will the green spot algae and others probably disappear with kh2po4 dosing or should i purchase k2so4?
     
    #3 mexicatz, Aug 28, 2016
    Last edited by a moderator: Aug 28, 2016
  4. burr740

    burr740 Micros Spiller
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    Continuing the Excel is probably a good idea. That really has nothing to do with ferts.
     
  5. mexicatz

    mexicatz Junior Poster

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    i've seen some people have some success with only using flourish / excel in a low tech with only slow growing plants. If I go that route, do you know a water change schedule? I usually need to add equilibrium to my water to increase gh


    this is a photo of the amount of plants in the tank




    there will be more moss on the substrate soon
     
    #5 mexicatz, Aug 28, 2016
    Last edited by a moderator: Aug 28, 2016
  6. burr740

    burr740 Micros Spiller
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    By "flourish / excel" you mean two products - the micro nutrient supplement Flourish Comprehensive, along with Flourish Excel, right?


    Flourish Comp will cover the Fe, but as Pikez pointed out you would still be lacking a significant source of potassium. Flourish comp lists some K among the ingredients, but the amount is negligible. So you could dose a little KH2PO4 if you wanted to for the gsa (personally Ive never seen much effect on gsa from dosing P in a well balanced tank) or consider K2SO4, which is potassium only.


    Ive always had good success doing water changes once a week or two on low tech set-ups. Not sure I really buy into the whole bad for CO2 thing. For me everything just does better with weekly water changes.
     
  7. mexicatz

    mexicatz Junior Poster

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    I was talking about flourish comp and excel. Do you think:


    1/4 equilibrium on water change


    2ml excel every day or a couple times a week


    2ml flourish 1-2x a week


    and possibly a small amount of kh2po4


    is a good reduction or should it be cut down even less
     
  8. burr740

    burr740 Micros Spiller
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    What size is the tank? Hard to say about the amounts without knowing that. :)


    Dose the excel daily. It's only effective for 12-24 hours and it doesnt build up.


    Then a dash of Flourish comp and some form of K once or twice a week. Once is probably enough with the current plant mass. Weekly 30-50% water changes. Keep everything clean is the best defense against algae...along with healthy plants of course.
     
  9. Pikez

    Pikez Rotala Killer!
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    Water changes won't need to be weekly, but it will help.


    If you're not planning on adding pressurized CO2, then, just keep it simple and aim for a low-tech planted tank with some well-fed fish. Fish food should provide most of the nitrate and phosphate these plants will ever need. Keep the light low, add more plants, feed fish, change water. Low tech is a beautiful thing.
     
  10. mexicatz

    mexicatz Junior Poster

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    its a 20 gallon high
     
  11. burr740

    burr740 Micros Spiller
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    Probably better to go with K2SO4 instead of KH2PO4. Because with the latter you'll be adding unnecessarily large amounts of P.


    Tetra's Flora Pride is just K and Fe. Dosed per instructions is fairly cheap for smaller tanks, pretty good supplement for low tech set ups. Probably all you need with well fed fish
     
  12. mexicatz

    mexicatz Junior Poster

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    would I be alright dosing the equilibrium flourish and possibly excel then waiting to see if I get a potassium or iron deficiency ? or will I certainly get it just using these
     
  13. burr740

    burr740 Micros Spiller
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    That should be fine. Take the less is best approach, you can always add something down the road if you see a deficiency.
     
  14. skija

    skija Lifetime Members
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    My 2 cents : from what i see in the pictures i think you have too much light ,if pictures are not over exposed .


    If you don't use co2 lover the light and dose excel , adding more stem plants (fast growers) will help , also a few water changes
     
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