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  1. #1
    Senior Member
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    Macro algae questions (beginner)

    Just finished cycling the 77 gal tank it has been about 5 weeks and all the parimeters are good.

    I am seeing some grape calperula grow on my LR in the main tank post cycling...should I just leave it there or try to remove it. Its great to see things begin spontaneoulsy growing but I don't want trouble later on.

    Also thinking about growing some macro algae in the sump. What Kind of light do I need...something cheap would be good!!

  2. #2
    Moderator mike536's Avatar
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    Hey Jonah. I had the same stuff growing in my tank. I tried to get rid of it. Cutting it off, scrubbing the rock, the whole nine. After a while it just came back. If it's local to one rock I would take the rock out. Put it in your sump or something. Thats just me thou. It grows like theres no tomorrow
    Cheers,
    Mike Philpott

  3. #3
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    Is it dangerous to leave in or just a pain? It is just a couple little grapes right now. I hate to disturb things at this early point in the tanks existance but perhaps early is best...
    77 Gal Mixed reef -33 gal sump -20 gal fuge
    440 watt vho lighting - 2 watt moon lights

  4. #4
    Senior Member CanadianGuy's Avatar
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    It's just a pain to remove if it gets a good hold...it won't do any harm.
    James...

    "Knowing is half the battle!" ~ G.I. JOE

  5. #5
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    And the second question--how much light to gro macro alga in a sump?
    77 Gal Mixed reef -33 gal sump -20 gal fuge
    440 watt vho lighting - 2 watt moon lights

  6. #6
    Senior Member orion's Avatar
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    i would keep all macros out of the mail tank. if they get out of control removing rockwork to clean them is a real pain Mike has the right idea to drop it in the sump.
    Jonah are you sure its grape calperula?
    " It is just a couple little grapes right now"
    Could it be valonia they look like little grapes too. If they are pull them out without breaking them they are the devel to deal with..

  7. #7
    Senior Member orion's Avatar
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    oh ya use a pc dayglow bulb in around 6000 k your macro will do well

  8. #8
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    Jonah,
    If you want my advice, completely remove the rock and use it in your sump. Macro algaes, especially the Caulerpa types which the grape is part of, are very bad for the main tank. All it takes is one cell to be attached to a piece of rock and it will always continue to grow and will eventually take over the tank. It will smother out all of your other corals eventually. Trust me on this. You do NOT want macros in your main tank... period.

  9. #9
    Senior Member CanadianGuy's Avatar
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    Not necesarrily true.

    Almost everyone that has a seahorse tank has macro in the main tank. It's great for hitching and giving the horses some cover. You just have to be careful which type you use. Alot of it is easily kept under control with some simple pruning.
    James...

    "Knowing is half the battle!" ~ G.I. JOE

  10. #10
    Senior Member xerces's Avatar
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    I agree with Canadianguy Toutouche... I had halmedia in my display tank and my tang munched it down as fast as it grew...

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