Bulb replacement time! Who swaps them in a few at a time vs all at once?

Discussion in 'Equipment: Setup and Discussion' started by DarkSky, Jan 13, 2020.

  1. DarkSky

    DarkSky Administrator
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    My current bulbs have 18 months on them, and its time to replace them.

    Does everyone do a few at a time over a couple weeks or lazily swap them all in one go?
     
  2. SuperJay

    SuperJay Senior Member
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    I'm just getting started for the first time using t5 lighting. I am thinking of replacing 1 bulb every 4 months on a 4 bulb setup. I seems like it would be shocking to change them all at once... but I don't know
     
  3. jlanger

    jlanger "The North Remembers"
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    When I ran T5 bulbs, I would change them out two bulbs at a time; 2 out 4, 2 out of 8, etc.
    I would buy all new bulbs at one time when they'd be on sale and hold on to them until it was time to be switched out. I kept a chart listing when bulbs were installed and needed to be changed.

    Although, the last time I changed bulbs, it was all at eight bulbs once.
    I switched to LEDs.
     
  4. abhishek

    abhishek Senior Member
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    I do - all 12 at the same time !!! No acclimation nothing necessary
     
  5. infinityends

    infinityends Senior Member
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    It has been a while since I've used T5* but I swapped bulbs out over time.

    *Technically, I have T5 on a planted freshwater system. But I don't bother worrying about bulbs on that system on only swap them when a bulb fails.
     
  6. Fishfoo

    Fishfoo I contributed!
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    Haven’t changed them yet but when I do it will probably be four at a time (have an 8-bulb).
     
  7. OP
    DarkSky

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    That's the rub - I hear from so many people that you should but the lazy part of me just wants to get them all done now!
     
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  8. abhishek

    abhishek Senior Member
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    Honestly I have never done it slowly even when I ran 400 watt Ushios.
    If the acros are healthy and everything is stable , they can take the increased PAR . You can always reduce the photoperiod if your mind wants to .
     
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  9. VikingsCrazy

    VikingsCrazy I contributed!
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  10. Flounder

    Flounder BRS Reef Squad!
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    All at once but I cut down the "on" time and bump it up over weeks.
    Too hard to change bulbs too often. Once and done
     
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  11. OP
    DarkSky

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    Sounds like what I'll do. Thanks everyone!
     
  12. Fross

    Fross Senior Member
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    Sorry to hijack but I have a similar question.

    How often do you all replace? I've run mine 6 hours a day since October. Iv read everything between 6 months and 2 years. Anyone ever done a PAR test to see what kind of drop happes over time? Does the fact that I am also running LEDs allow the bulbs to go longer since they are not the primary source of light?
     
  13. Flounder

    Flounder BRS Reef Squad!
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    12-14m. I have a par meter I use to occasionally check.
     
  14. OP
    DarkSky

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    I used to replace yearly, but based on the latest vids from BRS I bumped it to 18 months. My T5s are on for 6 hours/day.
     
  15. OP
    DarkSky

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    How long do you run yours daily? Do you notice a drop after that long?
     
  16. Flounder

    Flounder BRS Reef Squad!
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    9 hours for 2 bulbs.
    7 hours for the other 6x.
    But I have led bars on before and after t5. Total light period is about 13.5 hours.
     
  17. RSnodgrass

    RSnodgrass TCMAS President
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    I'd keep in mind how long people have run their bulbs for... use to be 1yr tops and now it's 2yrs.

    As I recall there is a near zero difference at 1yr.
     
  18. ADeepBlueSea

    ADeepBlueSea I contributed!
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    I’m with the swap them all at once camp... would be a huge PIA to do it over a period of time and my acros would more than likely appreciate the bump in PAR. I plan on swapping mine at 14months.


    Sent from my iPhone using Tapatalk
     
  19. Nickz

    Nickz Nobody
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    I always did mine yearly in pairs every 2 months would be a pair, mostly so it didn't all hit the pocket at once.
     

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