G13 t8 fluorescent bulb 15w 58w fluora growth light for plants and aquariums osram through the emphasis of the blue and red spectral range in their light fluora fluorescent bulbs are particularly well adjusted to the effective spectrum for photobiological processes in plants the plant growth is promoted significantly through this fluora bulbs are used everywhere where natural daylight is not enough for plants for example above plant islands in shopping centres offices hotels and l