I just use it during the winter months. I still put them outside in the spring when it's warm enough out because there's no replacement for the sun, but I do really like these shelves. I have them on a timer so they get anywhere from 12 to 14 hours of light. The lights produce a little heat, for example we keep the furnace on 70F during the winter and my temperature gauge on the shelf (bought separately) will read between 75-78F & I've never seen it go above 82F so it's not too hot. I do get good growth during the winter instead of the plants just surviving.
Current picture of the shelves. If I want to increase the humidity to grow aerial roots you'll notice the plastic bag on the right, that currently has a dwarf schefflera inside. Good luck
The plants in the farmer tray are the thirsty ones. I have them sitting on ceramic tiles so they don't sit in water. All my ficus & others tropicals are under the spider farmer lights.