I am looking into starting a 55 gallon tank this weekend and was wondering about lighting. What are differences between the kinds of lighting and what would you suggest for a 55 gallon tropical aquarium?
Compare that price to a 130 Watt (2 x 65) 'Current Satellite' PC fixture + bulbs for $120 (unless the price went up). That's the set-up I have.Look at http://www.reefgeek.com. A 55 watt bulb + a reflector for it + a ballast will be about $80.
Any other lights that you may consider will be inferior. If you can't make your own fixture you will end up overpaying for a light that is not very good, will use more electricity but will still grow plants.