I'm in the middle of planning out everything I need for a 150 gal Reef. I pretty know everything I need, but don't really understand how metal halides work. I looked at the new bulb compairison page (great idea btw ) and really like the way the 2x250 20k bulbs look. http://www.aquariumadvice.com/bulb_comp/mh_20K/SunnyX_MH
here are my questions.
what exactly does the different kelvin do?
when setting them up, does each bulb run off of a different ballast?
how long do the bulbs last?
would a 150 gal be better off with 2 x 400w or 3 x 250w? (the dimensions are 60x24x24)
whats the difference in euro made, german made, ect... bulbs?
what else would i need besides the ballast, sockets, bulbs, and reflectors?
sorry for all the questions, but thanks for any responses.
here are my questions.
what exactly does the different kelvin do?
when setting them up, does each bulb run off of a different ballast?
how long do the bulbs last?
would a 150 gal be better off with 2 x 400w or 3 x 250w? (the dimensions are 60x24x24)
whats the difference in euro made, german made, ect... bulbs?
what else would i need besides the ballast, sockets, bulbs, and reflectors?
sorry for all the questions, but thanks for any responses.