And here's the quote from Rosyboa.com
<TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font class="pn-sub">Quote:</font><HR></TD></TR><TR><TD><FONT class="pn-sub"><BLOCKQUOTE> Use of an undertank heating pad is one of the more effective ways to achieve a thermal gradient, particularly when using a thermostat controller. Surface temperatures should provide the following thermal gradient:
cooler side 78o-80oF<--->87o-90oF warmer side
Heat of this kind is much more preferable than use of a light. Lights rarely add value to maintaining healthy rosy boas and primarily serve to enhance the aesthetic qualities of the enclosure. Too much heat, or too little, can result in regurgitation, which often leads to more serious health consequences.
</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR></TD></TR></TABLE>
Notice the gradient described is "surface temperature" not ambient temperature. And since both sites say not to use lights, that's why I only used the 20 watt for the day/night cycle.
[addsig]
