The SKYLIGHT MID-30 INTENSE and SKYLIGHT MID-30R INTENSE lamps were designed in a very different way, than other vivarium/terrarium dedicated lighting products. Majority of available vivarium lamps are oriented around high brightness. In some more advanced lamps like SKYLIGHT PRO, brightness is somewhat compromised for high color rendering index (CRI). In MID-30 and MID-30R INTENSE both mentioned above parameters are compromised to achieve one ultimate goal – vivid, intense colors Large portion of deep red light in the spectrum triggers phytochromes of plants to produce colorful protective pigments, while RGB based spectrum of the lamp allows the user to see his planted terrarium with deeper, more intense coloration. Additionally the side glaring has been brought to the minimum in this product making looking on your vivarium a pure pleasure!