no harm whatsoever. in fact it somewhat helps because it simulates what a snake would be seeing outside via moonlight, and you will probably notice more activity...i know this due to personal tests. I have been using incandescant blacklights for months for heating ever since I got them...until I get my big wooden cage finished.
The incandescant and flourescent should produce the same wavelengths of light...just different form of doing so. I've had them over my snakes for 1.5 months, 2.5 months, and 3.5 months or so. ALSO...there is no need to go buy an expensive "reptile night time" bulb...just go down to home depot get yourself a blacklight flourescent or whatever. Have fun!
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The reason mainstream thought is thought of as a stream is because it's so shallow. -George Carlin
Battling ignorance one stupid person at a time.
Current snakes:
0.1 Licorice Stick Black Rat(Lola)
1.0 Neonate Black Rat (het for Lic Stk's) (Frankie)
1.1 Texas Bairds ("Bill" and "The Bride aka Beatrix Kiddo" )