T12 vs T5 supplementation hear me out on this one...

Discussion in 'Aquarium Lighting By Dana Riddle' started by dantimdad, Oct 11, 2018.

  1. dantimdad

    dantimdad Well-Known Member R2R Supporter Build Thread Contributor North Alabama Reef Club

    Joined:
    Jun 24, 2009
    Messages:
    720
    Likes Received:
    1,015
    Location:
    North Alabama
    OK, so without getting mean, arrogant or just plain bratty, explain why, (in quantifiable terms not subjective) T5 is better vs T12 for supplemental lighting when used with leds.

    Keep in mind the following:

    I have the stuff to DIY a 4 bulb retrofit for either size bulbs.
    I already have access to two dozen 24" t12 bulbs that are unopened.
    I have access to almost a dozen 24" t5 bulbs that are unopened.
    We are going to use 24" bulbs as a comparison because the wattage is nearly identical and it's the size that will fit my cube.
    Space is not an issue where this is concerned
    Heat is not an issue where this setup is concerned
    The bulbs I have are close in spectrum (actinic and 6500K) They actually look close to each other.
    All we are doing here is eliminating some shadowing

    One other thing, when using t12 you can actually overdrive them with electronic ballasts and get more power but shortening life a bit. So we may explore that avenue

    It matters not, that it's old school technology. I ran t8s and t12s for years with nice results as a primary source of light on many tanks. So saying because it's newer or older isn't a good argument.

    All though this is for fun mainly, I may just implement some of the stuff discussed here.

    I will be open minded to all suggestions/opinions but data rules the day here.
     
    Tags:

  2. Bpb

    Bpb Valuable Member

    Joined:
    Feb 27, 2014
    Messages:
    1,130
    Likes Received:
    956
    Location:
    Texas
    Are the t12 VHO or normal output. I suppose one would really just need to compare par and spectrum at the end of the day. Why not use both
     
  3. Chef Tommy

    Chef Tommy Active Member R2R Supporter

    Joined:
    Oct 15, 2016
    Messages:
    308
    Likes Received:
    244
    Location:
    New Orleans
    I remember looking into this years ago when I had a small farm. We used T5 only because the heat was a little less and also created an energy savings. The savings were small per light but over the year it added a bit of savings because we had 12 fixtures with 12 bulbs each. We used the lighting for seedlings.
     
  4. dantimdad

    dantimdad Well-Known Member R2R Supporter Build Thread Contributor North Alabama Reef Club

    Joined:
    Jun 24, 2009
    Messages:
    720
    Likes Received:
    1,015
    Location:
    North Alabama
    They are NO t12 20 watt.
     
  5. Bpb

    Bpb Valuable Member

    Joined:
    Feb 27, 2014
    Messages:
    1,130
    Likes Received:
    956
    Location:
    Texas
    T5ho bulb will likely offer better par and spectrum. They get my vote.
     
  6. dantimdad

    dantimdad Well-Known Member R2R Supporter Build Thread Contributor North Alabama Reef Club

    Joined:
    Jun 24, 2009
    Messages:
    720
    Likes Received:
    1,015
    Location:
    North Alabama
    Anyone ever measure T12 PAR?
     
  7. saltyfilmfolks

    saltyfilmfolks Lights! Camera! Reef! R2R Supporter R2R Excellence Award Reef Squad Leader Photo of the Month Award Build Thread Contributor

    Joined:
    Feb 25, 2014
    Messages:
    26,330
    Likes Received:
    28,168
    Location:
    California
    If you have them, there is absolutely no reason not to use them.

    They do have a lower output. So what? Makes it a low to med light tank.
     
    DSC reef and dantimdad like this.
  8. dantimdad

    dantimdad Well-Known Member R2R Supporter Build Thread Contributor North Alabama Reef Club

    Joined:
    Jun 24, 2009
    Messages:
    720
    Likes Received:
    1,015
    Location:
    North Alabama
    I think part of me is curious as to why we trend away from things. Is newer always better? Of course not. Look at the people going back to MH. Heck, I might even give it another go. I have the equipment.

    The other part of me just likes to stir up stuff. Make folks think.

    Lastly, I have both types available. And I am indecisive when it comes to this phase of my build. :D
     
    DSC reef likes this.
  9. saltyfilmfolks

    saltyfilmfolks Lights! Camera! Reef! R2R Supporter R2R Excellence Award Reef Squad Leader Photo of the Month Award Build Thread Contributor

    Joined:
    Feb 25, 2014
    Messages:
    26,330
    Likes Received:
    28,168
    Location:
    California
    T5 is plain and simple better tech.

    Myself , I like to try things cuz I can.
     
    dantimdad likes this.
  10. dantimdad

    dantimdad Well-Known Member R2R Supporter Build Thread Contributor North Alabama Reef Club

    Joined:
    Jun 24, 2009
    Messages:
    720
    Likes Received:
    1,015
    Location:
    North Alabama
    I once read an article that said the only thing that made T5 better is the reflectors. Wish I could find it now. It made sense and the time because the argument was PC bulbs are bent T5s basically. But, since they are wider from bending, the reflectors don't work as well.

    Whatcha think @saltyfilmfolks ?
     
    saltyfilmfolks likes this.
  11. dantimdad

    dantimdad Well-Known Member R2R Supporter Build Thread Contributor North Alabama Reef Club

    Joined:
    Jun 24, 2009
    Messages:
    720
    Likes Received:
    1,015
    Location:
    North Alabama
    Hey @Dana Riddle do you have some input on the T5/PC aspect of this conversation?
     
    saltyfilmfolks likes this.
  12. saltyfilmfolks

    saltyfilmfolks Lights! Camera! Reef! R2R Supporter R2R Excellence Award Reef Squad Leader Photo of the Month Award Build Thread Contributor

    Joined:
    Feb 25, 2014
    Messages:
    26,330
    Likes Received:
    28,168
    Location:
    California
    Trust me a bit. I use t12- cf t5 in other applications. It’s my job to wear a meter. It’s output and wattage to lumen efficiency.
     
  13. dantimdad

    dantimdad Well-Known Member R2R Supporter Build Thread Contributor North Alabama Reef Club

    Joined:
    Jun 24, 2009
    Messages:
    720
    Likes Received:
    1,015
    Location:
    North Alabama
  14. Dana Riddle

    Dana Riddle Valuable Member Staff Member R2R Supporter Build Thread Contributor Article Contributor Expert Contributor Partner Member 2019

    Joined:
    Sep 10, 2011
    Messages:
    1,059
    Likes Received:
    2,113
    Location:
    Dallas, Georgia
    I unpacked the binder with all the light measurements (for old school T12 and PC lamps) just yesterday. but I'm getting last minute preparations made for two presentations I'll make at the Pet Festival in Italy. Another hang up, Advanced Aquarist online magazine was recently sold to Reefs.com and the AA site is down, where my only copy of T5 tests I did resides. I know, excuses, excuses. ;) Let me write myself a note to look at this when I get back.
     
    dantimdad likes this.
  15. dantimdad

    dantimdad Well-Known Member R2R Supporter Build Thread Contributor North Alabama Reef Club

    Joined:
    Jun 24, 2009
    Messages:
    720
    Likes Received:
    1,015
    Location:
    North Alabama
    As usual, you are the man!
     
    Dana Riddle likes this.
  16. Dana Riddle

    Dana Riddle Valuable Member Staff Member R2R Supporter Build Thread Contributor Article Contributor Expert Contributor Partner Member 2019

    Joined:
    Sep 10, 2011
    Messages:
    1,059
    Likes Received:
    2,113
    Location:
    Dallas, Georgia
    Remind me when I get back (Oct. 22.) Things are just too crazy right now. But it sounds like an interesting project to compare the lamps for PAR, PUR, spectrum.
     
    dantimdad likes this.
  17. dantimdad

    dantimdad Well-Known Member R2R Supporter Build Thread Contributor North Alabama Reef Club

    Joined:
    Jun 24, 2009
    Messages:
    720
    Likes Received:
    1,015
    Location:
    North Alabama
    Just set myself a reminder.

    Thanks!
     
  18. oreo5457

    oreo5457 Active Member

    Joined:
    Sep 18, 2017
    Messages:
    484
    Likes Received:
    351
    Just throwing this out there:
    Power compact/compact florescent have, generally speaking poorer Lumens/watt ratio than current light types.
    T12's aren't far behind and some of this depends on the phosphor type.. T5/8's use newer more efficient RGB phosphors than the "old" t12's.
    What "new" t12's use is ?????
    bit on phosphors..
    t8's are "the most" efficient of all the "common" fluorescent types, even beating t5's
    t5's advantage is just size vs coverage.. Easier to pack 8 t5's in than t12's .. pure physics...
    Or you can put 3 t5's in the same space as 2 t12's ect..

    you can "overdrive" t5NO's as well w/ t5HO ballasts..

    nothing wrong w/ t12's though suspect getting quality ones is limited..Just capitalism..or at "reasonable" photons/$ pricing..Economies of scale..

    light "type" matters little really...
     
    Last edited: Oct 11, 2018
Draft saved Draft deleted

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice
Loading...