If you are building or renovating this is a lighting effect you need to give serious thought to.

http://www.greenhouse.gov.au/yourhome/t ... l/fs45.htm
http://www.warm.com.au/pick_a_topic/lig ... chens.html
http://www.smarthouse.com.au/Smart_Idea ... s/Q5M7F8R5
http://www.aneka.com.au/lighting.html
http://www1.sedo.energy.wa.gov.au/pages/lightopt.asp