Advanced Topic UV light knowledge Plse

Discussion in 'Advanced Topics' started by HermFish, 21 Feb 2015.

  1. HermFish

    HermFish

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    In need wisdom Plse;
    bought a 55W UV Sterilizer light for my 600lt aquarium - how long should I keep the light on?
    Should it be on continuously or only a few hours per day?
    Will it also kill my pods on the life rock, do not want to interfere with mandarin's food source?
    Much appreciated
     
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  3. JS

    JS

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    Hi. UV light doesnt kill anything.. it sterilizes...meaning they cant make more babies.... so bad things in the aquarium cant multiply...be it algae spores or whatever bug or bacteria. The problem with UV light is its not selective...so anything that pases it through it will be affected by it....your pods will be fine as they stay in your rocks and substrate...so they wont be affected....most guys run them 24hrs a day inline with your return...i use to run mine just 12hrs...but i dont use UV anymore...
     
  4. dallasg

    dallasg Moderator MASA Contributor

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    I disagree, uv kills, the name sterilizes is a misnomer
     
  5. JS

    JS

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    Thats your opinion...i run huge idustrial UV lights on my humidifying tunnels in a food processing plant...and my lab results prove it doesnt kill just controls the counts...we then have to add chemical sanitizers to totally kill...cant see why a this would be any different...?
     
  6. JS

    JS

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    Just a little extract...." It is effective in destroying the nucleic acids in these organisms so that their DNA is disrupted by the UV radiation, leaving them unable to perform vital cellular functions."

    So passing through the uv light they are pretty much still alive...they will eventually die purely cause they wont be able to multiply their cells...can ask one of the microbiologists to give a little bit extra info on monday...
     
  7. HermFish

    HermFish Thread Starter

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    Wow this sounds very complicated, is it then beneficial for the aquarium to have?
     
  8. JS

    JS

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    well thats a topic up for debate . im sure many guys will swear by it...and claim it reduces alagae etc...and it does by ensuring the spores etc in the watercolumn that passes through it gets zapped...but it doesnt take away the fact that you still need good delegent husbandry and nutrient control.

    and when you have fish pests it will help with that too...

    i dont run UV on my new tank and dont see anything different on this tank than on my previous tank....but the more experienced guys can give some guidance...
     
  9. mitchel

    mitchel

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    Idol marine had so good info on uv in a email a few weeks ago. May be idol could post it on masa
     
  10. irie ivan

    irie ivan MASA Contributor

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    from natural causes, OR as a direct result of UV having schmagled them...??
    I dint use UV in my tank...
     
  11. JS

    JS

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    Guess its fair to make that connection...

    But as far as killing them on contact like some unit manufacturers claim....i dont think so....will confirm with our micro guys tom morning.
     
  12. dallasg

    dallasg Moderator MASA Contributor

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    I didnt mean on contact but very keen to read more if they would share info
     
  13. 459b

    459b Moderator MASA Contributor

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    Disrupting DNA definitely kills things.
    The term sterilize could mean to make them unable to reproduce, as it taking your dog to get fixed, or sterilize can also mean to rid of unwanted organisms as in cleaning of medical equipment.
     
  14. JS

    JS

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    cool stuff...will see what i can get out of them for us...
     
  15. Brendan6

    Brendan6

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    Good thread. Also keen to see more info.
     
  16. Nemos Janitor

    Nemos Janitor

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    what is the efficiency of your UV steralizer?

    The efficiency rate to kill most pathogens is 33,000 microwatt's/sec/sq.cm.

    Your steralizer instructions should give you the microwatt's/sec/sq.cm. to the flow you pass through it.

    Run it 24/7
     
  17. Nemos Janitor

    Nemos Janitor

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    UV will only kill what is within it's frequency range and what passes through that zone. It will not control bacteria that lives in the substrate, rocks, corals and invertebrates. So pods are not compromised.

    In other words it keeps the background parasite and bacterial count down relative to the kill and flow rate through the steralizer.
     
    Last edited: 22 Feb 2015
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  18. HermFish

    HermFish Thread Starter

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    Hi JS, thanks for the efforts and very keen to hear what you have to say after your consulate tomorrow.
     
  19. 459b

    459b Moderator MASA Contributor

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    @HermFish , what exactly would you like to know? I have a postgrad degree in microbiology
     
    Last edited by a moderator: 26 Nov 2015
  20. HermFish

    HermFish Thread Starter

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    Hi David
    I am a mere beginner with very limited microbiology knowledge - actually a dummy. The guys at Dorry informed me that one should rather install a UV light for "goggas" as opposed to Ozoniser. So I have bought a 55w unit for my 600t tank and plumbed it, but to scared to actually switch it on..
    My goal being to ensure my water quality in the tank remains in top quality condition and thus thought this additional effort will add to it.
    I have two very happy and well fed mandarins and am very worried that they might be effected (pods and biological food), should I switch on the UV system.
    So in summary just want to ensure I give the best to my tank mates.
    Much appreciated
    Herman
     
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  21. RiaanP

    RiaanP Moderator

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    only water that passes through the UV unit is treated. As mentioned the pods living within the rock pores are OK. A few pods that do wonder about in the sump area being sucked up by the UV might be unlucky in getting "fixed"

    But as far as your concerns about your Mandarins, no need to worry.
     
    Last edited: 23 Feb 2015
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