Yeah just screw them in, but make sure you have good air flow through it as they get quite hot.
I will post a pic of mine later once I finish playing with the scape lol
Dirt tank - 120g 120cm x 60cm x 76cm ( under construction )
Shrimp tank - 10g 60cm x 30cm x 35cm ( under construction )
The Fraternity of Dirt #93