Switching to a red heavy bloom spectrum for flower is sold as essential, but full spectrum white LEDs grow CBD flower just as well provided the total light reaching the canopy is sufficient. The plant cares more about how many photons arrive than about the exact colour mix, and blue in flower helps keep the stretch under control. Test results from the same strain under a white panel and a purple bloom panel are on https://calmcbdseeds.com and the difference was negligible. Buy the brighter lamp, not the pinker one.