The exo terra repti glo 20 is a general light source with high visual light output very high colour rendering indexcri but a lower uvb radiationr this bulb is suitable for snakes all amphibians frogs toads and salamanders and nocturnal animals plants will thrive under this light as well it is also a perfect complementary light to a uvb bulb to boost visual lightr stimulates plant growth high visual light output stimulates appetite activity and reproductive behaviour through