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Thread: Metal Halide

  1. #1
    Senior Member
    Join Date
    Feb 2005

    Metal Halide


    I just bought a 75 gallons tank... And now I'm looking to buy some metal halide. SO right now I'm wondering if 175 watts would be OK or should I go with 250 watts.

    And later I will install some VHO actnicts.

    Thank you,
    Martin Langlois

  2. #2
    Senior Member
    Join Date
    Nov 2003
    Final choice will depend on the dimensions of the tank and what you think you might be keeping in that tank down the road. IMO If it is 4 feet long and about 18 to 20 inches deep 2 X 175 watt will do a decent job. However .. if you want HIGH intensity and a good bang for your buck go with 2 X 250. The difference in set up cost will not be much.

  3. #3
    Senior Member
    Join Date
    Mar 2005
    Also factor in at this point in time that the cost for the lighting is almost the same for a 175w setup vs. a 250 setup. The cost difference for a PFO dual tar ballast at J&L for example is 35 dollars.

    If you plan to run 20,000 k bulbs, the 175w bulbs will appear quite dim visually too so be sure to check out someone's tank first to see what you like. We all have our specific preference when it comes to tank colour.

  4. #4
    Senior Member
    Join Date
    Aug 2003
    It really depends on what you want to keep, if your going to do sps then 175 IMHO is not enough thats what i have and i'm upgrading to 250's
    50 Gal SPS/LPS Mixed Reef
    25 Gal Fuge
    Neptune Aquacontroller
    Pro Cal Calcium Reactor
    Acrylic City Kalk Reactor
    Euroreef CS6-3 Skimmer
    2x175W MH 1x250W MH 2x65W Actinics

  5. #5
    Senior Member
    Join Date
    Feb 2004
    Was the tank a B-Day upgrade. Lucky you. I would go with 2x250w. The best prices I found were at B&B hydroponics, 60$ for a core and coil triple tap ballast. Ivan sells the 250w 14000K bulbs for 60$. So a complete kit should run you about 120$.

  6. #6
    Senior Member CanadianGuy's Avatar
    Join Date
    Feb 2004
    Aren't the ballasts sold at hydroponics shops the industrial type? If so you may have a problem running an aquarium specific bulb in them. I wanted to do that a long time ago and was told I couldn't.

    "Knowing is half the battle!" ~ G.I. JOE

  7. #7
    Senior Member Fisherman's Avatar
    Join Date
    Apr 2003
    Ballasts are ballasts.. some can't run the very high Kelvin lamps tho.. but the regular TAR (coil) ballasts run both industrial and aquatic lamps! hope that helps..

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