i have a salt water reef tank with 150 watt metal halide 20000k?
and i was wondering ! can i use a normal metal halide bulb which is 6400 kelvin instead of 20000 kelvin ; in other words is too much kelvin capacity necessary for the growth of anemone and coral . my tank is 50 gallon height 55 cm length 1 meter and width 45cm do you think also that 1 metal halide x 150 watt is enough for my tank or should i combine it with another metal halide lamp or any other kind of light if yes please specify the kind of light and power.
I’ll agree with the others on this. The number is referred to as the color temperature. Have you ever taken a photograph indoors with incandescent or fluorescent lighting? Under incandescent light, the photo looks orangish and under fluorescent it looks bluish-green. This is an effect of color temperature. Your anemones and corals need light that’s a specific color wavelength, so you’ll need something in a higher range than 6400K, otherwise the photosynthetic algae within their cells won’t be able to photosynthesize and produce food, and your anemones and corals will die.
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