Zoo Med T-5 HO Flora Sun Max Plant Growth Fluorescent BulbThis 5,500K high intensity lamp with peak emissions in the blue and red regions servers to maximize the photo biological process in plants. The emission spectrum closely resembles the absorption curve of chlorophyll-A, promoting maximum photosynthesis, ideal for planted aquariums and terrariums. Also great for shy fish species such as Dwarf Cichlids, Discus, etc. Can be used in conjunction with the Ultra Sun or Tropic Sun lamps for maximum light output. Fits Zoo Med's AquaSun T-5 HO Double Light Linear Fluorescent Hood.