What Full Spectrum Light Is the Best?

There are certain bulbs that i've come across, like florescent bulbs and so on, that were utilized by a guy named john ott who wrote an amazing book called health and light. And he also started notice these effects on the plants of just being exposed to light at night. It would affect the certain like the morning glory, for example, wouldn't open up in the morning as it was supposed to,. So started studying that and all sorts of other things along this line. He did come across some full spectrum florescent bulbs, which i haven't been able to actually source effectively. But that stuff we are looking into with raw optics is more full spectrum, healthed light sources