• Amused
  • Angry
  • Annoyed
  • Awesome
  • Bemused
  • Cocky
  • Cool
  • Crazy
  • Crying
  • Depressed
  • Down
  • Drunk
  • Embarrased
  • Enraged
  • Friendly
  • Geeky
  • Godly
  • Happy
  • Hateful
  • Hungry
  • Innocent
  • Meh
  • Piratey
  • Poorly
  • Sad
  • Secret
  • Shy
  • Sneaky
  • Tired
  • Results 1 to 12 of 12

    Thread: UV Bulb life span

    1. #1
      prestongohlke is offline Senior Member
      This user has no status.
       
      Feeling:
      ----
       
      Join Date
      Jan 2009
      Location
      Fort Worth
      Posts
      610

      UV Bulb life span

      So everyone knows that you are supposed to change your UV bulb at least once a year right? Well thats great that we all know what we are supposed to do, however I want to know the whys.

      My UV light is one year old and I replaced that bulb, however the old bulb is still lit and appears to be working. So my question is: Why should we spend 50-100 or whatever it may cost to replace a working UV bulb??? Regardless of "what is recommended"

      Below is one article that I found talking about UV life span, from what it says most manufactures define it as when the bulb drops down to 70% of its normal output. If you are like me I bought a larger size UV then what I actually needed so 70% efficiency is actually still very good .....

      So why replace a UV bulb when its still working?????????

      Preston

      ---------------------


      http://www.hvacuv.com/pdf/Introducti...f-UV-Light.pdf

      Many factors are associated to the overall lamp life of UVGI Lamps. UV lamp manufacturers have developed
      lamp life ratings for certain types of UV lamps based on set operating currents and ambient conditions. The
      lamp life rating has been established at a point when the lamps intensity drops to 70% of the lamps original
      output. This standard was originally developed for the use of UV lamps for water disinfection, as it has been
      found that if intensities drop below the 70% level, then optimum disinfection may not be achieved. This
      standard has been adopted for many other UV application, however, to date there has not been a standard
      developed specifically for IAQ applications. Some typical lamp life spans are outlined in the table below:

    2. #2
      tnthat's Avatar
      tnthat is offline Senior Member
      This user has no status.
       
      Feeling:
      ----
       
      Join Date
      Mar 2005
      Location
      Callahan, FL
      Posts
      323
      Most people buy the minimum size to clear their pond of algae. If using to clarify only after your pond matures you may only need to run during the spring algae bloom until your filter bio catches up with the ammonia output.
      Tom





    3. #3
      Popfish's Avatar
      Popfish is offline KOI CKK, WWKC Lifer
      This user has no status.
       
      Feeling:
      ----
       
      Join Date
      Jun 2006
      Location
      Jacksonville, Florida
      Posts
      6,204
      If the UV still meets your needs, there is no reason to replace it. You will know soon enough when it does not!
      Charter Lifetime Diamond Member #5 of WWKC


      Certified Koi Keeper(CKK)


    4. #4
      Cowiche Ponder's Avatar
      Cowiche Ponder is offline Living my life's dream
      This user has no status.
       
      Feeling:
      ----
       
      Join Date
      Aug 2004
      Location
      Cowiche, WA
      Posts
      20,811
      I did not replace my bulbs the first year after installing the UV..actually 2 years. I have a pretty big UV and I guess it was still doing the job. The bulbs will be replaced this year.

    5. #5
      birdman's Avatar
      birdman is offline DIY Savant
      This user has no status.
       
      Feeling:
      ----
       
      Join Date
      Jun 2005
      Location
      Palm Springs, CA.
      Posts
      21,995
      Get a spare bulb, but run the old one until it stops working.

    6. #6
      Koidaddy's Avatar
      Koidaddy is offline Senior Member
      This user has no status.
       
      Feeling:
      ----
       
      Join Date
      Aug 2005
      Location
      Montreal, Quebec
      Posts
      3,302
      Quote Originally Posted by Popfish View Post
      If the UV still meets your needs, there is no reason to replace it. You will know soon enough when it does not!
      Yup, I agree with Popfish - Mine is on its third season - only will change once it stops doing its job. Them dang bulbs are expensive, so why throw out too soon.
      Have You Hugged Your Koi Today?


    7. #7
      Otter is offline Senior Member
      This user has no status.
       
      Feeling:
      ----
       
      Join Date
      Oct 2007
      Location
      NW Indiana (zone 5)
      Posts
      793
      If you want the UV to sterilize the water for some reason, I can see replacing the bulb more or less on the recommended schedule. But if you use the UV as a clarifier, I see no reason to change bulbs until you see something green.

    8. #8
      blk90s13 is offline Senior Member
      This user has no status.
       
      Feeling:
      ----
       
      Join Date
      Jan 2008
      Location
      new jersey
      Posts
      129
      Another question is how often do you clean the glass sleeves ? a friend was told by a store owner ( pond supply store ) that one should clean the sleeves monthly !?
      KOI newbie

      Howell NJ 07731


    9. #9
      boggen's Avatar
      boggen is offline Senior Member
      This user has no status.
       
      Feeling:
      ----
       
      Join Date
      Jun 2005
      Location
      trivoli, IL
      Posts
      9,161
      some folks, may only run the UV for a few days or a few weeks of the year. vs non stop like other folks.

      each pond is different, some more shade others more sun. different filteration setups, different fish loads, etc.... some folks just don't need to run UV's as long.
      Pond and Construction Forum 101 good place for any first timers to the forum. for finding resources and general info.

      Ryan

    10. #10
      birdman's Avatar
      birdman is offline DIY Savant
      This user has no status.
       
      Feeling:
      ----
       
      Join Date
      Jun 2005
      Location
      Palm Springs, CA.
      Posts
      21,995
      In allot of areas like here,you only need to use UV for green water in the summer, so you can store your UVs in the winter and get two years or maybe more out of them.
      Using them for 100% sterilization is a different thing. On my 1000 gallon "For Sale" tanks I have a 50 watt UV on each. At 2000 gph this gives me a 100% sterilization. These bulbs I will change every year, but will use them a 2nd year for green water in my other ponds.

    11. #11
      cindy's Avatar
      cindy is online now Moderator ~ WWKC Vice President ~
      Koi Health Care Committee Member
      is Hopeful
       
      Feeling:
      Friendly
       
      Join Date
      May 2004
      Location
      Mt. Wash. KY - 7 miles outside Louisville
      Posts
      63,617
      Quote Originally Posted by birdman View Post
      Get a spare bulb, but run the old one until it stops working.
      My opinions in ER and on this forum are mine only. Use my advice at your own discretion.

      "Our goal is to assist with emergency and Koi health issues, as well as educate on best practices. Please help us gain a clear picture by giving the original poster time to answer our questions before offering opinions and suggested treatments."


      K.O.I.

      Member: EIHIOICGI

      http://www.koiphen.com/forums/showth...nd-Information

      http://www.koiphen.com/forums/showth...06#post2606106 Show thread

    12. #12
      gray cat's Avatar
      gray cat is offline Administrator ~ WWKC BOD ~ Facebook Administrator
      is looking forward to Christmas!
       
      Feeling:
      Awesome
       
      Join Date
      Jun 2004
      Location
      Winston Salem, NC. Zone 7b
      Posts
      50,353
      Quote Originally Posted by birdman View Post
      Get a spare bulb, but run the old one until it stops working.
      This is what I have always done.
      Nancy



      Koiphen 2012 Koi Person of the Year!

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •