We use the lamps already for 4 years. The first half year they serve as full illumination at 100% Lets after six months the Leuchtinsentität and UV radiation after it comes out of the socket, ie, with a new one replaced and used Sun Desert used in another version as dawn light or heat assistance (TermoControlProII) until it flickers or she gives up the ghost. Thanks to this procedure, one can effectively exploit the so but expensive lamps.
The lamps are not quite cheap, but I go for the benefit of my reptiles not compromise.
Strong buy recommendation for the Sun Desert 150W Ultra