GHA invasion

Discussion in 'Nuisance Algae' started by DeanT, 15 Nov 2012.

  1. DeanT

    DeanT Dean

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    Hi all.
    I have been trying to deal with this issue for a while, but thought I would put it out there for some assistance.
    I have GHA , and it is driving me nuts.
    I have checked my parameters yesterday and everything was flat 0except po4 of 1mg/l so wasn't too bad .
    Last night I tested nitrate, nitrite, kh, po4 sal and nothing stood out as the problem.

    On the weekend I did a big water change about 350litres.

    I wanted to know if anyone has any suggestion as to how to remove this pest from my tank.
    I have tried special blend, bio digest, but nothing seems to assist.Emerald crabs have been suggested , but I cannot find any in the cape and some shops said they may only get in January.

    My Lfs has suggested to remove my corals, and scrub my rock, but I have a reef and this to me is not going to be a realistic solution as I have some rocks that weight 30kg

    Please help, as I would love this to Be gone ASAP
     
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  3. brentnorm

    brentnorm

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    What's the size of your tank. Try some Red Sea NOPOX.
     
    Last edited: 15 Nov 2012
  4. DeanT

    DeanT Thread Starter Dean

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    2.5 x 1 x 0.8
     
  5. Easy Tiger

    Easy Tiger Day Dreamer Deluxe

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    Scrubbing rocks is only a temp solution - it just spread spores and it grows more in other places.
    The only thing that worked for me was to reduce lighting periods by about half for several weeks, or to take affected rocks and put them in the sump for a few weeks or months till the algae died from lack of light.
    They say its a PO4 problem, but my PO4 parameters were normal. I've also seen emerald crabs in action, and lawnmower blennies, but not a final solution.
     
  6. carlosdeandrade

    carlosdeandrade

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    Even though you say your parameters might be ok, show us the numbers.:) GHA is most likely using your NO3 and PO4 thereby giving you false readings. How old are your test kits, when did you last do a water change (how much and how often), have you tried any form of biological control, even physically removing the GHA might help. You tank might be cycling. Overfeeding your fish?

    Even old globes will cause GHA to go wild.

    It might be just a simple husbandry technique.
     
  7. Visser

    Visser MASA Contributor

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    Sorry for asking dean, but is your phosphates 0.01mg/l or 1mg/l
    1mg/l is way too much!!! Im running my phosphates on undetectable levels & i still have some GHA on one of my rocks...
    For high phosphates, i would suggest GFO like phospha-guard or phosban.


    Its a shame youre so far from me as my sea hare would eat your GHA up faster than you can ever believe!!! Sea hares are machines when it comes to GHA...
    But as always, its better to solve the problem first...
     
  8. HenkHugo

    HenkHugo

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    Dean how long did you use Special Blend for?

    Something to remember is that no bacteria actually eats phosphates.
     
  9. leslie hempel

    leslie hempel Moderator MASA Contributor

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    it can be many things...

    so eliminate the ones you are sure are not the problem from my list below

    daily addition of No3 and po4 as in

    tapwater
    meaty frozen foods that have not had the excess juice strained off.

    heat (possibly causing die back and forming po4)
    rocks leaching nutrients.
    insuffiecient flow/skimming leading to nutrient build up
    an inadequate maintenance routine..
    addition of contaminated NSW during water changes... (important to test once in a while before addition to make sure you are in fact lowering nutrient levels)

    these are just to mention but a few.... it can be a nasty thing to overcome but be assured it is a phase your system will go through, not everyone gets it or gets it as severley, but it can be maintained and eventually eradicated.
     
  10. DeanT

    DeanT Thread Starter Dean

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    I had used it previously and then when the gHA started I began the recommended dosing schedule , so
    It was about 1 month
     
  11. HenkHugo

    HenkHugo

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    Give it some more time. If the GHA is from much in the rocks it takes time for the bacteria to eat the organics. We use it extensively in industrial aplications for algae control.

    As a foot note - during my visit to the plant 2 weeks ago they told me AlgaWay 5.4 will be coming out with a ReefSafe logo on it. They tested it extensively in tanks and it works very well on marine algae without any negative impact on corals etc.
     
  12. DeanT

    DeanT Thread Starter Dean

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    Thanks Leslie
    have been looking through all
    Of these scenarios, but been battling to find the cause
    I have stopped frozens completely
    Added 2 extra flow Pumps about 2 weeks ago
    Been doing water change 20% every 2 weeks
    Added orca bio cubes 1 week ago
    Water is run through a water boy to unit

    So I am quite stumped As to the cause
     
  13. carlosdeandrade

    carlosdeandrade

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    I think you just need a little patience, like @HenkHugo says, especially if you have done what all the guys have said.
     
    Last edited by a moderator: 26 Nov 2015
  14. leslie hempel

    leslie hempel Moderator MASA Contributor

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    i definatley think you are making a effort to eradicate it by proper husbandry methods! well done on that it can be the hardest part.. but i do feel you need to be a little paitient and allow a chosen product to work and offer long term results... there is no quick fix.. just diligent system management..

    i had cyano a while ago and it seemed like a never ending fight untill one day i walked in and realised it had actually dissapeared altogether...


    just a few notes on whichever carbon sorce system you use..

    make sure it is added in the right amount... EG cubes (not knocking special blend but i know the cubes more inticatley hence using them as an example) in the correct ratio in respect to where your po4 and no3 is currently at... this will help with knocking the initial available amount of nutrients fueling the fire... and will ensure success of use of the product.. putting in too little will render the product ineffective..

    its important to stick with a system.. and give it some time....

    are you using the standard or titanium cubes?
     
  15. mornewil

    mornewil Morne

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    Yip hang in there. Might just be a phase your tank is going through. I'm dealing with cyano at the moment.
    Test my water regularly, do my regular water changes and just go on with my normal husbandry routine. I mean if your tank is running for long without problems and all of a sudden you get algae etc, could just be a phase. Sometimes we panic and when reacting make it worse. I'm just easy about it. As long as my livestock show no stress, I'm cool. Good luck bud.
     
  16. mornewil

    mornewil Morne

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    double post
     
    Last edited: 16 Nov 2012
  17. HenkHugo

    HenkHugo

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    Dean as a matter of interest - where do you get your water from?
     
  18. DeanT

    DeanT Thread Starter Dean

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    @HenkHugo
    I have a Waterboy ro
    Unit and I mix my water myself

    Do I need to cut back on dosing additives as I am dosing the aqua nitro range ?

    Fish all look good , I am worried about the algae covering my corals

    Do I leave it on the rocks, or do I remove it day by day
    I know by removing it I run the risk of spreading spores
    I will start with a light period reduction soon
    I have mh and blue and pink t5 should
    I reduce all of then Or just the mh ?
     
    Last edited by a moderator: 26 Nov 2015
  19. Albert Terego

    Albert Terego

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    I'm going to have to disagree on this point. All living things (including bacteria) require phosphate for growth. So they may not actually eat it (no mouths or digestive system as such ;)) but they definitely do use it.

    This is the basic principle behind carbon dosing in all it's various forms.
     
  20. carlosdeandrade

    carlosdeandrade

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  21. belindamotion

    belindamotion Google Master

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    What are the actually parameter readings...? I'm the Queen of GHA...:p and I got rid of mine by mostely upping my Parameters...I was on the low side as I only have the odd mushrooms so high readings was never an issue, but I was told I was creating a "Lagoon" effect...so I upped everything...Mine took 4 months as I didn't blow, scrape, scrub blah blah blah...I just let it reduce naturally...some of my GHA was a good 5cm long...:p
     
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