I presently use in my 125 gal
tank metal halides, 14k 150 watts and compact lights but due to the rising cost of electricity I had in mind building a hood using 6 5000k (that is the highest available) 100 watt daylight screw type twist fluorescent bulbs. The number of watts and the electricity used would be dramatically less than with my present fixture. The problem would be I believe in the color temperature for the corals. I saw in a web site a similar fixture that was built with this type of twist bulbs but were much bigger. Has anyone heard of building or using such a thing.