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UV light kills algae/parasites?

Discussion in 'Planted Aquariums' started by Dwarf Puffers, May 12, 2008.

  1. Dwarf Puffers

    Dwarf Puffers Registered user

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    When my tank had ich a little while ago, I read in an old veterinarian fish book that UV light would kill it. Now, in a new veterinarian fish book, it says that a UV light can also kill off algae. According to it, if you filter under a UV light (not over the tank, of course), it will kill algae and parasites.

    Is there anything wrong that could happen here? Mutated algae/parasites? Killing something beneficial to the tank? Harming my fish somehow?

    This would be pretty temporary, as I'm probably going to get a lot of marimo balls when I go to my good NSLFS this weekend. I'll try to starve it a more natural way.

    If anyone is wondering, I have floating algae that makes the tank look like pea soup. Too much phosphates in the tap.
     
  2. Notophthalmus

    Notophthalmus I put the 'snork' in 'snorkeling'!

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    UV will kill (via massive molecular disruption) anything that is suspended in the water, from algae to viruses to zooplankton. It has no effect on anything that does not pass through the UV chamber.
     
  3. SchizotypalVamp

    SchizotypalVamp The REAL AC Mafia

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    this is the basis for a UV sterilizer.
     
  4. Notophthalmus

    Notophthalmus I put the 'snork' in 'snorkeling'!

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    Whoops, I didn't realize you meant a regular UV light rather than a sterilizer. A regular UV light will be less effective than a manufactured UV sterilizer, but will probably still be beneficial.
     
  5. jmhart

    jmhart Revolutionary

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    Yep, it'll kill what ails you....UV Sterilizer, anywhere from $50 to $150.
     
  6. Dwarf Puffers

    Dwarf Puffers Registered user

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    Thanks, everyone :)
     
  7. The Zigman

    The Zigman Here fishy fishy fishy!!!
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    Just plugged mine in, hoping to kill some BGA...
     
  8. emptywallet

    emptywallet another youngling who is clueless

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    the Uv may kill benificial bacteria to though
     
  9. The Zigman

    The Zigman Here fishy fishy fishy!!!
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    Yep, the majority of beneficial bacterium live in the filter, and on surfaces. not free floating in the water, thus the only bacterial to be killed by the UV sterilizer is whatever passes through it, and, its still not an instant death, they have to be exposed to the uv for a few before they die...
     
  10. jmhart

    jmhart Revolutionary

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    Agreed.

    Also, the UV probably won't help with the BGA(cyanobacteria) since it's not free floating.
     

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