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    Japanese Metal Halide Spotlights

    We get many messages regarding our lights and lately they seem to be generating more e-mails than usual. Here’s some more information: The  bulbs we use are a spotlight with a 150w HQI bulb built into a typical spot reflector. The bulbs themselves have a dichroic coating that cuts UV and bounces IR out the […]

    We get many messages regarding our lights and lately they seem to be generating more e-mails than usual. Here’s some more information:

    The  bulbs we use are a spotlight with a 150w HQI bulb built into a typical spot reflector. The bulbs themselves have a dichroic coating that cuts UV and bounces IR out the back… it also gives them the beautiful blue gleam. Here’s a photo of one of the spots while turned off.

    MH Off

    A cool feature about the bulbs we are currently using is that they have a “dual spot” or a spot within a spot. By this we mean the overall temperature is ~10,000K while the middle has a tighter spot that is ~14,000K. This works great for targeting Blue and Purple corals, and still making greens and pinks pop from the 10,000K light surrounding.

    Here are two images of the light on and you can see the different color temperatures emitted from the bulb.

    MH On 1

    MH On 2 

     

    When it comes time to replace the bulbs we will be trying a bulb with the opposite effect, as shown below. 

     MH Dual Spot

    We are only using 2 150w Spotlights and they light up our entire tank very well. Even corals placed on the bottom of our 24in tall tank get good coloration.

     MH Above

    One thing to keep in mind is the 2ft distance from the bulbs to the top of the tank. This means some corals are 4ft away from the bulb and still growing well and showing blue and purple coloration! With some changes in mind, we will be lowering the light rack by ~6in which will give higher PAR and should result in even better coloration.

    The best ability these lights have is directability– you can angle and direct them so the light goes where you want it. By directing the light to hit the front side of the corals you can cause them to develop pigments on the sides, which is what you see when looking at them through the glass.

    Think how beautiful your SPS look when viewed from the top down. This is the same thing. We’ve tried different angles and it can drastically effect coloration. We plan on adding a couple more so we can increase this effect. 

    There you have it; We’ll be posting more information at a later time, but this is all for now. For the 8 months we have used these lights we are very pleased and can’t imagine going back to normal Metal Halides anytime soon.

    7 Comments

    1. matt s
      July 13, 2008 at 12:28 AM | Permalink

      I’d love some more details on where you got these spotlights / the construction (sorry if you’ve already covered it).

      Thanks!

    2. Felix
      July 13, 2008 at 1:42 PM | Permalink

      Great info…

      Felix-

    3. Lucas M
      July 14, 2008 at 1:56 PM | Permalink

      In the old Japanese tank threads there were pictures of bulbs like these in pink. Have you tried those?

    4. July 14, 2008 at 4:59 PM | Permalink

      Matt,
      We’re keeping the fixtures under wraps for now. Ours were a custom job, but we’re trying to get them available to others in the near future. Hang tight.

      Felix,
      Welcome back 😉 Glad to hear it was work that’s kept you busy. We hope you’ve been well.

      Lucas,
      Yes they do make them pink, but we have not tried them. We’re trying to keep the the electric consumption of our tank as low as possible and currently we do not have enough Pink or Red corals in our system to devote an entire pink metal halide. However, we do use a red LED spot to emphasize the coloration on our pink Birdsnest.

    5. jack
      July 17, 2008 at 12:59 PM | Permalink

      Your tank is always so clean! That “dual spot” sounds like it would work great.

    6. pmason
      October 10, 2008 at 11:37 AM | Permalink

      Super lights, could you please let us know where we can buy? online/link/etc… pretty please? Thanks in advance!

    7. Marek
      May 22, 2009 at 2:53 PM | Permalink

      I want one the questions this i want buy in the Europe??

    7 Trackbacks

    1. […] The spotlights allow him to find just the right intensity and color temperature for each coral in his system, but he does admit they also make his tank showy. Nothing wrong with that.  […]

    2. […] the fish. You can see the brighter areas in the back on the Chips (A. horrida) and A. nana. The lighting is very focused and creates some great shadows and […]

    3. […] have been very pleased so far. Here’s a shot from early this morning with only one deep blue Superkaru spotlight on in the back (…think ~50K color temperature). For how inexpensive this camera is, the low […]

    4. […] In addition to the 3×250 DE Metal Halides, the aquarium is surrounded by 13 blue LED track spotlights and 2×150w Metal Halide SPAX fixtures utilizing Superkaru lamps. While the Metal […]

    5. […] from Japan the lighting does not dissapoint. Anagonbe ustilizes 3×150w Superkaru fixtures using two Deep Blue and one Aquablue lamp. (We use a similar combination, except for one […]

    6. […] in the MT series) the other 2 were 14K BLVs. In addition to this core lighting Yasuhiro utilized 3 Superkaru 150w metal halide spotlights, two deep blues (50K) and one […]

    7. July 27, 2009 at 10:57 PM

      […] in the MT series) the other 2 were 14K BLVs. In addition to this core lighting Yasuhiro utilized 3 Superkaru 150w metal halide spotlights, two deep blues (50K) and one […]

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