Not spectrum lighting, full spectrum lighting. The bulbs will say full spectrum or have a color temperature over 5000k. There really is a lot of science in lighting.
Here is a thread with info on the subjuect
https://www.backyardchickens.com/t/913606/artificial-lighting-links-and-discussion
Here is a thread with info on the subjuect
https://www.backyardchickens.com/t/913606/artificial-lighting-links-and-discussion
