Adding 2 more 250w MH

Discussion in 'Lighting' started by Wizard, 29 Apr 2008.

  1. Wizard

    Wizard

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    Hope someone can shed some light on this for me...... sorry that was unnecesary. I have 2 250w 14k BLV's running on a 2m tank about 50cm above the water. i have the the fittings and ballasts in the lighting hood for another 2 mhs. i raised the hood to its current height in preperation for the extra 2 250w mhs. my only concern is that i almost lost a few lps ( false brains, candy cane ) and one or two other colonies when i upgraded from 2 150 ventures to the 250w blvs. there seems to be enough light and everyone is quite happy so the extra lighting is more for asthetics than anything else. would putting 20k blvs (would look awesome) cause less stress ie light shock than say putting another 2 14k blvs.
     
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  3. gaz19

    gaz19

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    wont the blue MH not spreed the light evenly?
    ps how the clams doing? the coral's looking great thanks
     
  4. Wizard

    Wizard Thread Starter

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    i only kept one, but they all doing really well. im hoping that i will get a much crisper looking tank with 2 more 250watt bulbs. (the existing 2 x 250w de 14k blv and another 2 250w de 20k blv. i just dont want to take the chance of dammaging anything.
     
  5. sunburst

    sunburst

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    4 x 150w would be more appropriate.... however... even these on a 500mm deep tank could be to bright. If you are just using for lps i would not waste the juice on 250watts.
    As for the higher 250w Kelvin ratings for lps; many will adapt, but will fair better under the type of light that T5'S produce.
     
  6. Wizard

    Wizard Thread Starter

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    i already have the fittings built into the hood for the 250s, the tank is a mix of lps, softies and a lot of sps. mabee its time to get rid of all the lps and softies.............
     
  7. gaz19

    gaz19

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    :thumbup: ready when you are;)
    lol
     
  8. Wizard

    Wizard Thread Starter

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    lol
     
  9. Muz

    Muz

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    That sounds about right !
     
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