Hoppy thanks so much! I honestly was very pleased you answered my question.
I would like to have the lights a foot above the tank for ease of access. The LED have always interested me but were too expensive until I found a link to :
Freshwater Planted Tank Lights - What width of light do I choose for an 18 inch wide tank with the lights hung a foot above? Was looking at two 36 inch one with the suspension kits.
These are 250 WATT METAL HALIDE PENDANT LIGHT FIXTURE [PEND250W]
Would two or three work best if I chose those? I really like the look of pendants but would the energy saving of the LEDs be better in the long run?