Possible light for frag tank.

Discussion in 'Lighting' started by Manic, 25 Jun 2009.

  1. Manic

    Manic Moderator

    Joined:
    12 Mar 2009
    Posts:
    3,313
    Likes Received:
    58
    Location:
    Johannesburg, Edenvale
    Hey everyone,

    So been looking for a solution to light my frag tank. I've looked up on natural lighting by using a sun light but the guys want R4000 to install it. I decided i'm going to DIY a lighting unit. Thought about T5's but I would rather go MH. Found this on the net, anyone think it will work. I'm going to get a proper globe, probably 10 000K.

    [​IMG]
    The unit has a 250W SE MH or you can get it with 150W DE MH
    The unit is 600mm Long and 320mm Wide. It also comes with a glass cover to block UV.

    So I've got two tanks, Tank 1: 800mm H x 800mm W x 300mm D, Tank 2: Standard 3ft tank.

    At the moment I've got a 3ft lighting unit which has a 150W MH and 2 39W T5's. This unit is currently on tank 1.

    So all I want to know is will this lighting unit work?
    If so should I go for the 150W or the 250W?
    Which tank should I put the lighting unit on.
     
  2. AdS Guest




    to hide all adverts.
  3. X Faktor

    X Faktor

    Joined:
    23 Jul 2008
    Posts:
    205
    Likes Received:
    3
    Location:
    Johannesburg North
    Lighting electrical sells MH bulbs for R200. But thats only for natural dayliht ones ie 6500k. Perfect for a frag tank!
     
  4. Manic

    Manic Thread Starter Moderator

    Joined:
    12 Mar 2009
    Posts:
    3,313
    Likes Received:
    58
    Location:
    Johannesburg, Edenvale
    So just got a quote for the lighting unit above. Its only going to be R700 with the control gear and everything or R850 with the globe included. So does anyone think this will work?
     
  5. Manic

    Manic Thread Starter Moderator

    Joined:
    12 Mar 2009
    Posts:
    3,313
    Likes Received:
    58
    Location:
    Johannesburg, Edenvale
    Also if I get the 250W SE MH do i still need the glass cover because that is just an extra option with the lighting unit.
     
  6. Manic

    Manic Thread Starter Moderator

    Joined:
    12 Mar 2009
    Posts:
    3,313
    Likes Received:
    58
    Location:
    Johannesburg, Edenvale
    So here is my final solution. Going to buy everything tomorrow:
    This is just a quick drawing, I'm going to cover the top with a piece of stainless steel and make it so it can be screwed off if I need to change anything. It will also have a some sort of hanging system so I can raise and lower it.

    [​IMG]

    I'm going to make this unit on monday out of brushed stainless steel. The two square holes are for the following 150W MH fittings:

    [​IMG]

    The center hole is for moonlights. Going to use the following down lighting unit with a blue LED globe:

    [​IMG]

    The side hole is for a 220V AC fan, going to use the following as I already have it:

    [​IMG]

    The other holes drilled in a circular pattern are for the air from the fan to escape.

    Here's the pic of the tank it is going on: (Its the 3ft on the right)

    [​IMG]

    As for globes I'm going to try a little experiment. I'm going to use 1 6500K MH and one 14 000K MH to see the difference in growth.

    So what you guys think?
     
  7. jacquesb

    jacquesb Retired Moderator

    Joined:
    29 May 2007
    Posts:
    17,868
    Likes Received:
    69
    Location:
    Cape Town
    Yes Manic - More than guaranteed to work! The 6500K Kelvin globe will ensure good growth.... and that is what you want....
     
  8. Manic

    Manic Thread Starter Moderator

    Joined:
    12 Mar 2009
    Posts:
    3,313
    Likes Received:
    58
    Location:
    Johannesburg, Edenvale
    I've read a lot about the lower kelvin not producing good colouration. Can somebody clarify something for me though. I know you wont see the nice colours under a 6500K globe but if I just move the coral over to a 20 000K globe will it then look colourfull, or will the 6500K globe cause the coral to loose some of its pigmentation, so then even when you move it over to a higher K globe it will still look brown. I'm really confused on this topic.
     
  9. jacquesb

    jacquesb Retired Moderator

    Joined:
    29 May 2007
    Posts:
    17,868
    Likes Received:
    69
    Location:
    Cape Town
    Manic - the idea with a frag tank, is that you start the corals off in a tank, with lower kelvin lighting, to get the frags to grow much quicker. Then - once they have grown to a "decent size", then you can place them in an area with a high wattage, actinic / blue globe - this will bring out the colors in the frags.....
    20000K MIGHT bring out the colors. But, I don't think as much as actinics....
     
  10. Manic

    Manic Thread Starter Moderator

    Joined:
    12 Mar 2009
    Posts:
    3,313
    Likes Received:
    58
    Location:
    Johannesburg, Edenvale
    Alright so then the corals will loose their pimentation. So if I run the tank on the right with two 6500K MH and then the tank on the left with 20 000K MH and two 39W actinic T5's I could swith the corals between the two. One to get them to grow and the other to colour them up.
     
  11. nico.m.ferreira

    nico.m.ferreira

    Joined:
    18 Mar 2009
    Posts:
    259
    Likes Received:
    0
    Location:
    Pretoria/Centurion
    Good day.
    can some one pls tell me were Lighting electrical is and some contact details pls.
    Regards.
     
  12. Manic

    Manic Thread Starter Moderator

    Joined:
    12 Mar 2009
    Posts:
    3,313
    Likes Received:
    58
    Location:
    Johannesburg, Edenvale
    What you want to get from lighting electrical?
     
  13. jacquesb

    jacquesb Retired Moderator

    Joined:
    29 May 2007
    Posts:
    17,868
    Likes Received:
    69
    Location:
    Cape Town
    Jip - that sounds great!
     
  14. Manic

    Manic Thread Starter Moderator

    Joined:
    12 Mar 2009
    Posts:
    3,313
    Likes Received:
    58
    Location:
    Johannesburg, Edenvale
    Awesome thanks for the advice....

    By the way how long will it take to colour the corals up? Months, weeks or years...
     
  15. nico.m.ferreira

    nico.m.ferreira

    Joined:
    18 Mar 2009
    Posts:
    259
    Likes Received:
    0
    Location:
    Pretoria/Centurion
    Whant to look for some MH globes.
     
  16. Manic

    Manic Thread Starter Moderator

    Joined:
    12 Mar 2009
    Posts:
    3,313
    Likes Received:
    58
    Location:
    Johannesburg, Edenvale
    For marine lamps contact the people at the light house. There MH globes are 50% cheaper than most pet shops. For example a BLV 150W DE MH 10 000K goes for about R400 where as at pet shops it is about R680.

    If you want daylight globes then most electrical wholesalers sell 6500K 150W MH for around R150.

    Just try any electrical whole sale place near you, they should stock daylight metal halide globes.

    Just google "the light house" for contact details to get globes. They stock all marine globes.

    What kelvin rating globes are you looking for?
     
  17. nico.m.ferreira

    nico.m.ferreira

    Joined:
    18 Mar 2009
    Posts:
    259
    Likes Received:
    0
    Location:
    Pretoria/Centurion
    Thanx I will definately use the advice.
     
  18. nico.m.ferreira

    nico.m.ferreira

    Joined:
    18 Mar 2009
    Posts:
    259
    Likes Received:
    0
    Location:
    Pretoria/Centurion
    I am looking for about 6500k for my frags that I am growing for the day I can stert building by realy big tank.
     
  19. Manic

    Manic Thread Starter Moderator

    Joined:
    12 Mar 2009
    Posts:
    3,313
    Likes Received:
    58
    Location:
    Johannesburg, Edenvale
    Alright cool I'm also looking for those. The light house only stocks globes from 10 000K and up, but I know for sure that all electrical whole sale places sell those and they cheap. If you pay more than R200 for them then you are getting ripped off.
     
  20. chikaboo

    chikaboo

    Joined:
    2 Jan 2009
    Posts:
    4,980
    Likes Received:
    48
    Location:
    Newcastle - KZN
    Would the light purple/lilac coloured lights used in freshwater tanks be beneficial to this application since they promote growth?
     
  21. nico.m.ferreira

    nico.m.ferreira

    Joined:
    18 Mar 2009
    Posts:
    259
    Likes Received:
    0
    Location:
    Pretoria/Centurion
    Hi guys, I looked around an could only find 4000k MH.
    Will these work or are they to low?
     
Recent Posts

Loading...
Similar Threads - Possible light frag Forum Date
Possible lighting controller ? Anything DIY Related 26 Jun 2009
Possible Lighting for Anemone Anemone's 26 May 2009
Possible white apot Quarantine Tanks, sick fish, QT corals 11 Jul 2016
Possible upgrade, what about the skimmer? Protein Skimmers, Mechanical Filtration 8 Nov 2015
ID needed on Gorgonian and possible nudibranch? ID Needed 5 Nov 2015
Possible eskom solution with your water change General Discussions and Advice 5 Aug 2015
Possible back up power solution? Power cuts 29 May 2015