going insane with GHA

Discussion in 'Beginner Discussions' started by wookie, 16 Sep 2014.

  1. wookie

    wookie

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    Hi guys before i decide to jack it all in maybe someone can help out here as hga is rife and driving me nuts. I have a 4 ft tank approx 320 litres with a 3 ft sump. My parameters are
    .ph 8.2
    .sg 1025
    .kh 7.7
    No3 0.25
    P.04 0.08
    Cal 425
    Temp 26 with chiller for control
    I run a bubble Magnus 5 skimmer reef octopus reactor with phos guard and atu for topping up.
    Every 2- 3 days I'm scrubbing algae off the rocks or it just goes wild i feed once a day 1/2 a cube which i let thaw and drain off the water. I have 2 goldies 2 cardinals, 1 fire goby, 2 clowns, 1 silver wrasse , 1 blue cheek goby, 1 yellow tang and hermit crabs and hermit2 cleaner shrimp.
    Corals are hammer, torch, pin cushion, xenia, frog spawn and a bubble anenome and all are doin well except for the algae.
    My lfs said to raise .ph and hit with kalkwasser which i didn't want to do so have my light on only for the4 hrs a day
    I have been doing 50ltr water changes every 2 weeks, the tank is now 9 months old and it cycled twice with algae blooms which lasted a couple of days but now for some reason this hga is persistent, i took out some of the rocks that looked like sand stone and replace with more live rock from my lfs. All help would be appreciated.

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  3. SilverWolf

    SilverWolf

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    Whats you lighting like? Your tank location?
     
  4. Ebi Omer

    Ebi Omer

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    I'm quite sute u mean GHA ;)
     
  5. wookie

    wookie Thread Starter

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    Lol :m33: yea you right I'm bad. I forgot to add i dose no3-po4 daily and i run a quad T5 54 watts lighting.
     
  6. SilverWolf

    SilverWolf

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    How long are you lights on and is your tank close to a window with sunlight?
     
  7. butcherman

    butcherman Moderator MASA Contributor

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    You are dosing nitrates and phosphates daily? Or that you are dosing red sea's no3-po4-x
     
  8. butcherman

    butcherman Moderator MASA Contributor

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    A few question what flow is in the tank? How much and often do you feed? What where the causes of the sencond cycles and algea blooms?
     
  9. Mantra Ray

    Mantra Ray

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    The algae could also be getting what it needs directly from the rock in the form of nutrient mining into the LR as GHA does have quite a good "root" system. Perhaps your rocks are rich in locked up nutrients?

    Only real way to fix it will be to keep your input nutrients low and keep exporting the algae until reserves are depleted.

    Just a thought...
     
  10. carlosdeandrade

    carlosdeandrade

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  11. carlosdeandrade

    carlosdeandrade

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  12. Lenweideman

    Lenweideman

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    Sea hare did the job for me
     
  13. Nemos Janitor

    Nemos Janitor

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    LOL bud. What do you mean by "quite sute"

    HGA = Hairy Green Algae. :biggrin:
     
    Last edited: 17 Sep 2014
  14. Nemos Janitor

    Nemos Janitor

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    Lift your Mg to 1450ppm
     
  15. rickgoldwing1

    rickgoldwing1

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    I had the same problem i increased my flow in the tank and believe it or not i added an airstone in the corner to put more oxygen in the tank and that seemed to sort the problem out very quickly
     
  16. wookie

    wookie Thread Starter

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    Lights on for 4 hrs now and not near any windows and the tank is now 9 months old. When it was cycling it algae bloomed and this disappeared within a week and about a month later did this again, there are 5 hermits in the tank and had 2 snails but don't know what happened to the snail i dose red sea no3 - po4 daily and i have a wave maker behind the reef at the bottom and a jabeao 25 wave maker on one side as well as the main pump from the sump was thinking to add another wave maker but find it blows too much on the corals but will see today. I feed daily in the eve, but half a cube. Thanks guys for your responses
     
  17. JS

    JS

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    Hi. Know it might sound stupid, but i didnt see it mentioned anywhere...do you top up with RO water?
     
  18. butcherman

    butcherman Moderator MASA Contributor

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    Here is whats happening. The watse from fewding and fish is settling on rocks due to incorrect flow in your tank. This creates a nutrient rich area around the rocks that absorbed the nutrients. Once the nutrients are in the rocks the rea sea nopox you are dosing cant do much. The algea is growing from the rocks and this also traps more watse aiding its growth.

    Your options here. Raise mg like nemo suggested. Daily manual removal of algea. Keep rocks clean after feeding. Tooth brush and or turkey baster will help here.

    Improve flow in your tank. Look at how and where your pumps are pointed. Either look at pointing pumps at rocks or look to create a gyre (circular swirl) in the tank to maximise flow.

    Try go no lights in the tank for 2 to 3 days.

    This should help you get a handel on things
     
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  19. dallasg

    dallasg Moderator MASA Contributor

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    i would remove the hermits and add more algae eating snails...
    hermits will just land up killing your snails
     
  20. wookie

    wookie Thread Starter

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    Ok cool guys gonna put another pump in dt and try get more water movement and i do use ro water for top up. Thanks and will give feed back soon. Holding thumbs
     
  21. mitchel

    mitchel

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    build your self an algae scrubber. the bigger the better
     
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