Growing under lights
Kipp McMichael (Thu, 05 Nov 2015 11:28:40 PST)

Jane,

I assume your new fixtures are a metal halide or high pressure sodium. These are indeed strong lights and can burn even full sun-loving plants. I would suggest shading with cloth or placing more sensitive plants outside the "cone" of light directly beneath the fixtures.
Just to note: If you lights are still fluorescents then they are unlikely to burn anything unless the bulbs are within inches of the plants.
-|<ipp