Hello All: Could someone comment on the suitability, or lack thereof, of the Osram HWL (MBTF) E27 mercury tungsten blended lamp for aquarium use? What is its spectral output in Kelvins? How about radiated heat? I've got a couple sitting in a store cupboard which are not being used. I've looked at the Osram site, but it kicks me out 'coz I don't use Internet Exploder. Thanks Jacques