The choice of light for aquarium are many.
You can have MH,T5 or the latest LED light.
LED light investment cost is high as compare to the rest but the running cost is about 40 to 50%
of MH of the same light intensity output and it generate almost zero heat to your tank.
So it cut down your chiller running cost and your air con running cost by about 50%.
However to get a good LED light set on Asian market that can match the MH light intensity and PAR is
tough after the exit of Solaris .
To ensure you are paying and investing in a good performance LED light set read more about the miniumum
LED spec and requirement in some of the threads put up in both local forums and also www.nano-reef.com