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  1. #1
    Junior Member
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    Jul 2004
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    Green Star Polyp Losing Colour

    HELLO ALL
    I HAVE A SMALL PROBLEM
    MY GREEN STAR JUST ALL OF A SUDDEN WENT BROWN ON ME
    WHAT IS THE CAUSE?
    EVEYTHING ELSE IS A OK

    SUGGESTION ANYONE

  2. #2
    Senior Member aquamann's Avatar
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    Feb 2004
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    1,231
    whats your lighting and water parameters? we need info

  3. #3
    Senior Member reefmutt's Avatar
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    Oct 2003
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    1,770
    And what is the temperature in the trank, also what additives- if any- are you adding, are you doing water changes. we need all the gory details!!
    Matt.

    Old system torn down to make a playroom.. planning a 62x42x28 high

  4. #4
    Junior Member
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    Jul 2004
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    hi fellas

    thx for replying
    salinity~ 1.024
    my temp~78 deg F
    ph~8.4
    ammonia~0
    nitrate ~20-40
    calcium 500 ppm

    lights----6500k metal halide
    2- 40 watt NO actinic
    soon to be upgraded.....to 400w 20000k metal
    4-175watt vho actinics b/c i like the excessive blues..

    water changes ~ 10% biweekly

    supplements includes calcium/iodine/strontium and trace elements on a weekly schedule.

    actinics on from 10-10pm
    metal halides from 11-9pm
    moonlights from 10pm-12 midnite

  5. #5
    Senior Member
    Join Date
    Jan 2004
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    730
    I would do bigger water changes. This article explains why - http://www.advancedaquarist.com/issu...2004/short.htm

    Remember you don't supplement what you don't test for and that includes calcium and alk. Iodine is very easy to overdose and cause problems for your corals. Calcium is a little high but not enough to cause problems.

    Nitrates are a little high. How long has this tank been set up?

    What is your alk reading? How about phosphates? Both of these can cause problems with corals.

    Sorry for more questions.

    Vickie

  6. #6
    Junior Member
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    Jul 2004
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    hi vickie
    thanks for replying. I am en route to the pet store for a wider range test kit for p04 and my alk test

    the tank is ~ 8 months. I add iodine once a week ~ 2 capfuls
    my skimmer is aggressive therefore i supplement...

    cant seem to fine tune it

  7. #7
    Junior Member
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    Jul 2004
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    VICKIE.....
    X C LENT ARTICLE ON WATER CHANGES


    THANK YOU

  8. #8
    Senior Member
    Join Date
    Jan 2004
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    730
    Have you tested for iodine? I have read more than one article about too much iodine causing coral deaths. 2 capfuls sounds like a lot, but I have never dosed for iodine. What size is your tank?

    Here is a list of articles I use to answer my water chemistry questions - http://www.reefcentral.com/forums/sh...hreadid=102605

    In particular - http://www.advancedaquarist.com/issues/nov2002/chem.htm

    If you are doing regular partial water changes, you shouldn't need to supplement more than calcium and alk (via kalkwater) unless your tank is full of SPS. If you can't get your calcium above 400 (which you don't have a problem with) then you test for magnesium. Your skimmer (per most experts) won't take noticable amounts of the trace elements out of the water. Some people say that activated carbon will remove more of the trace elements than a skimmer. I use activated carbon 24/7 and only add kalkwater on a regular basis. I will add CaCl2 or baking soda if my calcium or alk get out of balance. I also add iron (which is not known to harm corals) for the macro algae. I have recently started added amino acids from Salifert to see if there is a difference in coral growth since my phosphates are above 0.

    At 8 months, your nitrates should be less than 10 unless you have a heavy bio-load. What fish/corals do you have?

    Just something to think about.

    Vickie

  9. #9
    Junior Member
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    HELLO VJ
    I HAVE NOT EVER TESTED FOR IODINE
    BUT I WILL LAY OFF DOSING IODINE, HOWEVER IT IS STRANGE BECAUSE EVERYTHING ELSE IS WONDERFUL EXCEPT THE GREEN STAR WHICH IS NOW TOTALLY BROWN.

    I EVEN HAVE A FUSSY ANENMONE WHICH IS ABOUT A 12 INCHES TALL AND LOOKING GREAT AND THAT IS THE MOST SENSITIVE STUFF IN THE TANK.
    PS THE TANK IS A 125 GAL

  10. #10
    Senior Member
    Join Date
    Jan 2004
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    730
    Drac, I'm not sure whether the iodine would affect the green star. It is a possibility. I wish Reef Central's search function was working so I could do a couple of searches. I seem to remember something about green stars and lighting as well but don't remember what. I'm getting old. I have some time tonight and will do some looking and see if I can find anything about this.

    Vickie

    PS Using all caps on the internet is considered shouting which is very rude. I'm sure that is not what you meant.

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