Quick lighting and heating questions

[sattva]

Every since I got into snakes I have believed that some sort of light was necessary if for no other reason to effect whatever circadian rhythm they might have... Here is my problem... I went to turn on all my lights which add a little extra heat on the hot side in the winter... and I stop to think, It's going to be 108 degrees today where I am... I have left the window to the room open for a week now... The room has been getting up to 80 degrees... So I thought I don't need added heat so I left them off; Then I turned on my what I call my cleaning light for them... It's a huge 300 watt spiral fluorescent bulb... and I thought they get light from the window... It's not much until the sunset... And then I thought why am I using any heat with them right now why not save on electricity... They hardly use the hot side in the winter... So what would you do if you were in my shoes? I'm sorry... It was longer than I anticipated...