when you order 2 lights they are spaced so that you can use a divider, and yes they do come with the bulbs (18" T8 tubes)
Here you can see 2 sides of the same cage (shows the light spacing)
and together:
the hydrofarm thermostats will work. eventually (in a year or so) I would upgrade to something like a herpstat though
Flexwatt doesn't have any adhesive on it. it has to be taped to the bottom of the cage (with the supplied foil tape) it can be removed and reapplied. the tape will have to be replaced... you can get it at most hardware stores or even Walmart. (make sure when you order the cage that you ask them to put a second thermostat probe slot in the middle of the cage for use with the divider.
This picture shows the flexwatt taped to the bottom of the cage set up for use with a divider. You can see the outline and thermostat probe slot on the side for use without a divider
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