SuperCool is one of a kind of Metal halide lamp made by Lamp Network Inc, in Japan.  Most of you never heard of the name of this lamp because it is only sold in Japan.  Many Japanese reefers use this lamp because of good results for SPS coloration.  SuperCool is mogul base(E26) lamp and has a selection of 150W, but it has 5 different coloration of lamps such as Marine Blue, Aqua Blue, Deep Blue, Neon Color and Sun White.  Lamp Network Inc., does not state any K rate in the spec, but you can get some idea from their website. There is a description on their website for the Marine Blue lamp which lists two Kelvoin rating spectrums that are 21000K and 6500K.  6500K light spectrum is emitted directly from the lamp, but 21000K light spectrum is from a reflection of dichroic mirror coated on the back side of the lamp (see Figure 1).   Also, according to Lamp Network Inc., low Kelvin light and 80% of the heat is designed to escape from the back side (top) of the lamp, so the tank should not receive so much heat from the metal halide lamp. 
The price for a complete lighting fixture is 71,400yen ($730.00) including ballast, pendant fixture and one of lamps for MSRP, although you can usually buy a complete unit for around 40,000yen ($410.00) at Japanese LFS.  The price of replacement lamp is around 17,000yen ($170.00).  The lamp is only 150W and can only light up on small area, so one lamp may not be enough for corals especially for SPS on a tank larger than 36in wide tank.  Many reefers in Japan use more than one SuperCool lamp with different colored lamps on their main display tank to increase the overall color rendition. I know it is very expensive compared with lamps reefers are normally using, but many of reefers using this lamp have good results on their SPS coloration.  We would love to see some of the shops in the U.S. import this lamp.  The picture of lamps and display tank are provided by YAMA, an advanced reefer living in Japan. I appreciate his permission to use his pictures which can be seen on his website.
We want to thank Japanese reefer Taka Yamata for his post on the SuperCool lamp from Japan. Taka is an advanced reef aquarist living in Boulder, CO and he’ll occasionally be dropping the good word on exciting products from Southeast Asia.
