My mistake in my earlier post, it should b 35 W PL not 15W
ebeyonder: y i found it costly was because i used it to grow VFT; n since its VFT, it requires high intensity light. I used a 35W PL for my 2ft tank initially n most of them didnt survive; i later added another 35W, they were able to put out a few leaves, but were small n the plants seemed stunted; the worst thing was that the red akai ryu i got turned completely green!!
so overall its not rewarding after having spent so muc money on the setup and its maintainence(70 W of power for 12hrs) and not getting the desired results.
Sunlight is still better since it has a diverse wavelengths, of which PL doesnt. moreover, its free =)
But i think PL lights r more suited to sundews, which i used to grow too.