The lights are LED's from GLA or Green Leaf Aquarium. I got them on sale as they were closing them out but they have been great. I think they no longer sell them but they might be able to connect you some how??? I believe that the plants are a bit happy as I do use CO2 and EI fertilizer. It has been the best for keeping algae at bay. I have had my battles and it always revolves around my CO2 usually. The lights are quite bright and most of my research has been that Discus are not so happy with bright lights. They seem to go in and out of the light with not to much worry but half of the tank surface is covered with the Pennywort or Hydrcotyl which I am taking a machete to about every 2 weeks I have to be careful now that I have bigger fish as I swing!
I have been doing 50% WC every 2-3 days and I did bump the temp up to 82 for all those concerned! They are happy and creating there pecking order so to speak.