4ft lighting in 5ft tank?

Discussion in 'Lighting' started by MikeR, 27 Apr 2009.

  1. MikeR

    MikeR

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    Hi all,

    Looking for advice on the lighting for my new tank, it is 1600x500x500.


    Becasue of the depth im going to run t5 only (8 x 80w lamps)

    My question is would a 4ft unit (1200) give enough light coverage, means only 15cm each sde without above lighting, or do I need to go for the bigger 5ft unit( 1500).

    of course i understand that obviously the 5ft would be best option- but would I get away with the 4ft unit?(budget constraints...)

    Any advice would be really appreciated
     
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  3. leslie hempel

    leslie hempel Moderator MASA Contributor

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    the more light spresd the better but all it means if you are using 4ft tubes is that you may need to be more specific when placing corals, due to the lack of availibility of 5ft tubes in the past we were forced to go 4ft, and all has been fine so far.. personally i will be upgrading my 2 x 150w AM lighting unit to 2 x 250w wne i build my bigger tank (1.5 x .750 x .600). but it depends greatly on what you want to keep. (sps, LPS. Softies or mixed).
     
  4. Warr7207

    Warr7207

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    Try go with the 80w if you can
     
  5. MikeR

    MikeR Thread Starter

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    Warr, Am I right in understanding that you only get the 80w t5 in the 5ft length?

    if so then that seetles that..

    If not then I suppose all things being equal i could use the 4 foot unit with 80 w and just use strategic placement of the corals etc.?
     
  6. Tony

    Tony

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    Just put corals that require less light like mushrooms, zoas and softies at the edges. I can see the problem with having 15cm on eash side deprived of light
     
  7. Falcon

    Falcon

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    erm 4ft t5=54w
    5ft t5=80w

    you do know this right?as your posts seem to be confused somehow bro.

    i think it will work fine as t5 light spreads much more than MH so 8x4ft will be exellent and even on the sides corals like softies will thrive.
     
  8. MikeR

    MikeR Thread Starter

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    Heya Falcon,
    Tahnks for the advice, I had suspected as much re watt/size but am now much clearer in my mind.

    If the 80w are going to make a significant difference then perhaps worth biting the bullet- last thing I want is being in a position where I have to upgrade in a year or so because im dissapointed or restricted..

    If you think 8 54 will do the job however then thats fantastic.
     
  9. jacquesb

    jacquesb Retired Moderator

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    Mike - Imarine has 8 x 80 watt's over his 1.5 metre tank. His unit hangs about 40cm about the water. And his SPS corals is growing like there's NO tomorrow! So - IF you can - then I too would advise you to go for the 80 watts at all....

    BUT, if you are struggling to make it - then the 8 x 54 watt's would also suffice - you will just have to mount them closer to the water surive!
     
  10. MikeR

    MikeR Thread Starter

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    Hi Jaques ,

    I hear you, if theres one thing ive learnt its to rather do things properly than half baked. If it means the tank will be better and corals happier then it makes sense- perhaps I should look at the diy route which looks cheaper.

    would you go 5 white 3 blue?
     
  11. leslie hempel

    leslie hempel Moderator MASA Contributor

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    thats the beauty of the T5 system is that you can minipulate as you see fit,id personally go with more blue, so id go opposite to what you have suggested
     
  12. Pete

    Pete

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    Mike are you going to DIY your lights or are you going to buy a unit. As the DIY is much cheaper and the price diff between the 54w globes and ballasts and the 80w globes and ballasts is not that much so I would go for the 80w from the beginning and try not too skimp as you will just want to upgrade down the line and believe me it wont be in a year or two's time that will happen two to three months down the line then it just costs you more $$$ and you never get what you paid for the stuff.. PM me with a contact no and I will tell you where to get your ballasts and reflectors from..
     
  13. jacquesb

    jacquesb Retired Moderator

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    Yes Mike. That would be the best combination....

     
  14. Falcon

    Falcon

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    well rather just go four blue four white,works best IMO,but just get one extra blue tube and one extra white tube then you can chop and change to get the light colour that YOU want as everyones tastes are different.
     
  15. Shaun

    Shaun Retired Moderator

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    Because the normal ratio is 2 -1 not 1-1.:whistling:
     
  16. Falcon

    Falcon

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    normal?:lol: no such thing as normal in this hobby i'm afraid lol check that tank of the month on reef central (from poland) out that junz uses as a role model(check his thread for link) with lovely sps colonies.

    the guy is only using t5's no mh.he has 10X 80W t5's ONLY THREE OF THEM ARE WHITE!the other seven are blue and fiji purple etc...;)
     
  17. Warr7207

    Warr7207

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    80watt T5's are the bomb - They can keep SPS, Clams and Nemmies happy.

    I don't like the 10000K white, I rather go 12000 or even 14000K

    My setup has a 5/3 ratio between "white" and "blues"
     
  18. Shaun

    Shaun Retired Moderator

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    That would all depend on what you are after and what T5'5 you are using. I use a variety of T5's but also at a ratio of 2-1 and I find the colour of the tank to be very nice, not yellow and not to white or blue. But it is fine that you think I have no idea on what I am talking about, less pm's and question for me to answer.:) I am not the one looking for info, my SPS tank is doing fine on T5's only and has been running like that for over 2 years.
     
  19. Falcon

    Falcon

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    hehe no offense meant bro;) just trying to say everybody has their own taste and i can agree t5 are fine and the colour choice is up to the individual.(however all blue or all white is probably not in order as you either compromise colour or growth).

    everyone shaun is the guru on lighting lets spam him big time :razz:
     
  20. Shaun

    Shaun Retired Moderator

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    You forget I can edit and del posts.:whistling:

    Remember 14k T5's are on the blue side. But colour changes from Manufacturer to Manufacturer. I know ATI 10k are a nicer white than AM 10k's
     
  21. MikeR

    MikeR Thread Starter

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    Well at least I got a definitive answer...- Thanks guys..;)

    gee ok slighlty confused now, is there some sort of safe bet generic option ?
     
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