two or four? (T5)

Discussion in 'Lighting' started by Nick16, 31 Aug 2009.

  1. Nick16

    Nick16 Member

    Messages:
    1,761
    Location:
    Surrey, UK
    hi, its all change now, my tank is going to be 4ft (length) but it will be 2ft deep. i will have a total of about 415L (after decor and substrate)
    i guess i will have to have the 4xT5's then?

    my question is, will 2 on there own be not enough? (just over 1WPG)
    will 4 on there own be too much? (i will have just over 2WPG)

    my lights will be on a timer, as im out at school during the day, but there is only one plug on these lights, so if i have it on the timer, i either have them all on or only two... i could have just the two on and switch the others on when i get home but im not always home after school and then il forget and i will have large swings in the wattage and times of my lighting. = not good.

    so what can you guys recommend... just two, or all four? (bare in mind my tank is 2ft deep)
     
  2. Dolly Sprint 16v

    Dolly Sprint 16v Member

    Messages:
    1,611
    Location:
    Cheshire
    Nick

    If it were me - go for 4 and alter your timings to suit when you are in. My hood has twin switches + leads and come on @ 16:00 @ 2 tubes and @ 18:00 the other 2 tubes come on and off @ 20:00 just leaving 2 tubes on and off @ 23:00. If I had to do it manually I would do the above timings

    Regards
    paul.
     
  3. GreenNeedle

    GreenNeedle Member

    Messages:
    2,706
    Location:
    Lincoln UK
    depends what scape you are setting up really.

    The recent tests on barrreport are showing that 1 x full length T5HO are delivering the same PAR as the ADA Iwagumis are using!!! 50PAr at substrate 150 at the surface.

    2 T5HO from other tests show 100/300 so double the single one and this was over a well planted tank.

    I think you could get away with 2 over any type of scape even at 2ft. If not you can always turn the other 2 on.

    AC
     
  4. Nick16

    Nick16 Member

    Messages:
    1,761
    Location:
    Surrey, UK
    what luminaire do you have then? i thought all luminaires had just the one plug but two switches on the unit? if i had two plugs i would be able to use a timer and problem solved!
     

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