Hi! It's been awhile since I've been around the forums, as a once very active member.
So far I've had an "eventful" Summer, if you could call it that. I've lost my husband about a month ago in a fatal motorcycle accident which has left me to move back in with my parents for the time being...
I don't think so, really.
Read this care sheet, it'll tell you the BEST way to care for the babies.
With a 2x3 I would say 100 watts. http://www.amazon.com/dp/B0002AQDJK/?tag=exoticpetnetw-20
I use the one above. You might need to still use your plain 60 watt bulb on the other end to light up the whole thing, but is this bulb a coil bulb?
Are your tortoises babies?
I would definitely...
Many of us here will tell you that you should separate your two tortoises. They do not do well in pairs because they bully. They will fight, and the least dominate one can get really sick and possibly pass away. :(
How big is your enclosure? Your 60 watt might be enough for...