Doubtful on the stress.... temps have gotten as high in the summer as 93 F when on 18/6 but currently they have been at 82-85 for the past few months. I too have never heard of a "pissy mother" syndrome not to say that one does not exist. I love the idea of being able to vent those lamps. Unfortunately I have light hood that only has one vent on each: .: Sunlight Supply - horticulture and aquarium lighting systems :. Website and i would have to run some type of inline 4 inch vent hose in order to vent the reflectors directly. It's a great idea and I've been thinking of ways to vent them for years to no avail. Basically in order to vent them i'd need an input flange and an output flange therefore I could hook them up in a line. both lights run along the same 12 foot track so I'm kinda of stuck having a hotter than normal enviornment and simply venting the whole room as fast as possible. If anyone can think of a way to make to vent holes on that reflector let me know.