My guess is that nobody wants 10k 400watt bulbs. For the most part 400 watt 20k Radiums or XMs will work on anything less than 36" tall. So there isn't much reason to get a bulb that won't make the corals look as good.
I have been looking at going with 400w bulbs for my 72gallon tank. But, i have been thinking about with 15 - 20K bulbs. However, i may be interested if the price was dropped quite a bit....
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.