Ok as you know from my other thread I am building a new enclosure and looking for proper heat and lighting etc. I was recommended to not use the reptile specific light fixtures but I was previously looking to get the EXO-Terra "Glow Light" porcelain lamp fixture, which I was told that the glow was just a gimmick. However, just before I was going out to the hardware store to get my normal porcelain lamp shade, my friend whom I had asked about lighting before told me he has an extra one of those exo glow lights that he can give to me for free. He says though that I should only take it if I really want it because otherwise he will give it to someone else who wants it. I respect that. Now, I wouldn't mind taking the free lamp instead of spending more dollars, but I wonder if this "Gimmick" of a afterglow is just a harmless marketing tactic, or can it actually hurt my green iguana by disrupting its sleep? Any help would be appreciated.