Paradox
Marine Bonsologist
Switching often? Both basement lights and display lights are bright but basement lights are not for viewing so additionally lighting or light reflection is appropriate for the basement but not for a viewing area in your living space. Thus I have lost many bottom branches when displaying in the living space. And yes you understand what I mean by mounting lights horizontally but they could be vertical as well as long as you get light to the bottom branches of the plants. In my grow tent I have overhead lights, and lights in all 4 corners that light up the center of the tent which is mylar lined. I keep my Brazilian raintrees in there for winter.
I am not stating that this is the way you or anyone else should approach lighting, I am doing what is working best for my plants.
Blue blockers are good, I am wearing them now. But there are hydroponic glasses that are better.
If your BRT are losing lower branches, its because the top of the tree is too thick with growth, not because of the lights.
We need to thin BRT on the top so the lower branches dont get shaded. This is true of most if not all trees honestly.