Okay... so my uromastyx's cage is going to have an 18" florescent fixture in it. Is there any difference between Exoterra's Repti-glo and Zoomed's Repti-sun (is one better?) Should I use a 5.0 or an 8.0?
And, how often do I supplement with vitamin D3 (and how much of it) with either bulb? Do people generally change the dose dependent on how much uvb is coming from the bulbs, or just stick to a "light dusting every X# of days" just to sort of cover all bases?
I'm fairly new to the world of diurnal reptiles, so any advice is appreciated. 
Dawn
(oh, one more random q'tion.... when you buy washed playsand, do you generally trust that it's actually washed, or do you wash it again yourself?)


