light unit

Discussion in 'Lighting' started by paul bloem, 19 Jun 2010.

  1. paul bloem

    paul bloem

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    Hey all

    I am planning on building a 150 X 650 X550 tank with the water level at 500. Its going to be a reef and fish tank. Now I wanted to have a light unit with four T5's and two 150 MH's and a moonlight. This I want to run as follows: 12H00 till 14H00 2 X blue T5's
    14H00 till 16H00 2 X white T5's and blue
    16H00 till 19H00 2 X 150 MH's
    19H00 till 20H00 white and blue T5's
    20H00 till 21H00 blue T5's
    Rest of the time moonlights.
    Now do you think its right this way and is it to much lightning or to little?
    O, another thng for a light unit like this is between R8000 and R9000, do you think its beter to buy or to go DIY?



    Paul
     
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  3. viper357

    viper357 Admin MASA Contributor

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    Wow, that sounds like a lot of money for a light unit with 2 MH's and 4 T5's? Try shopping around a bit more.

    Your idea sounds good, but I would run the MH's for a minimum of 6 hours, especially if you are going to have light demanding corals.
     
  4. gMAN

    gMAN with the plan

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    :iagree:
     
  5. Annoying

    Annoying

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    You can deffinetley buy cheper. Pet stop sells these kinds of setups and they are very slimline and good looking for I think R3200(Think the price I paid for it),but it cab be more. Just have a look there they could help you to if you would want to go DIY
     
  6. RiaanP

    RiaanP Moderator

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    DIY
    :)
     
  7. SIMS

    SIMS

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    those cheap units have cheap components. The ballasts underdrive the lamps. I checked this with a par meter. You get what you pay for. They also have crap reflectors.
     
  8. Annoying

    Annoying

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    Is it spesifically the lighting units sold by pet stop that you are talking about or about cheaper lighting units in the general? I don't think the unit I baught is bad quility but I will get a par meter just to be sure.
     
  9. SIMS

    SIMS

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    not pet stop specific. Just the cheaper units. Just think to sell at R3500 a shop probably pays R2000 and the guy he bought from pays R1250 and a large portion of that is freight and customs and vat. Lighting has a 20% customs and 14% vat so maybe the factory sells it for R800 they needs to make the unit and a profit. So how much money is there for them to buy the actual parts. I mean globes, ballasts, endcaps, wire, plug, housing, staff, electricity, rent ect ect. and then they need profit as well. Remember they also buy in some of the components so the sum gets extended to those too.

    I have started to diy units as I know what ballasts there are. The daz ballasts for eg are a flipping joke.
     
  10. Annoying

    Annoying

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    It propably true, but just remember the guys that the shop gets the lighting from also gets their hardware and tools at wholesale prices and most propably make the lights and stuff. So now you use the same dropdown maths that you would use on that lighting unit and lets say a R1000 MH 150W and take down the profit and shipping costs you will also get to around R400 if it's not less. So the parts are also allot cheaper if they have to make most of the parts or buy them in bulk order. I'm just saying thats it doesn't always work if you buy the most expensive equipment you can find but it does work if you buy the equipment on the smartest manner possible.
     
  11. SIMS

    SIMS

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    Agreed 100% - Thats why I stated I have tested the ballasts.
     
  12. paul bloem

    paul bloem Thread Starter

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    Annoying those was on spesial that time. The thing is for a unit with two MH and two T5's is about 5000 and the one' s with only two extra T5's is between 8000 and 9000.
     
  13. Jacojs

    Jacojs

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    Can't one just buy a cheap unit and change the ballasts?

    Jaco.
     
  14. Annoying

    Annoying

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    O ok, didn't know the prices but thanks for clearing that up.
     
  15. Annoying

    Annoying

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    You could but that will just be a waste of money due to that the ballast seperetley will work you out almost more then waht the entire setup will. So it would propably be better then just to do DIY if you want to replace the ballast.
     
  16. paul bloem

    paul bloem Thread Starter

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    I agree because the ballast is R550 for one 150 MH and the MH casing is R250 each
     
  17. Jacojs

    Jacojs

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    Geez, so lights and skimmer take the bulk of the starting cash then.....this is gonna take WAYYYYYYY longer to start than I thought.

    Jaco.
     
  18. paul bloem

    paul bloem Thread Starter

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    Jaco it all depends on what you want to do and how big your tank is.
     
  19. SIMS

    SIMS

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    Go with T5's - they are eas to DIY and components are no where near as expensive. I find T5's give better light too ;)
     
  20. paul bloem

    paul bloem Thread Starter

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    I also thought it would work better, because I saw it on the zeovit website but they use a lot and it will work out to expensive to maintain.
     
  21. SIMS

    SIMS

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    for your tank you would get away with 6 decent T5 lamps easily. You would be able to keep most corals. If you added another 2 you could easily keep anything from a light point of view.

    All you need for 6 globes

    12 x endcaps - R45 each - R540
    3x BAG Ballasts - R275 each - R825
    6x Giesman Globes - R250 each - R1500
    6x Reflectors - R125 each - R750
    Some wire - R50
    Aluminium to build a frame - R200
    3 plugs - R30
    Total - R3895

    And you will have great lights.

    If you have the money to spend look at either a giesman or ATI fitting they expensive R8000 or so but the best you can buy.
     
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