well the most useless temp is 3500k-4000k so im not sure maybe it could be used supplementary but you would need the standards mainlyI don't think 1600k does anything. I think you need 6400k or 6500k for veg and 2700k for flowering. I got that from the tutorial in the cfl section a few months ago, it was helpful. Have a look and it will tell you all you need to know about cfl lighting.