Undertank heat sources like tape can provide good supplemental belly heat for babies. The problem with using it as the sole heat source is that beardies naturally seek "up" sources of heating, so are likely to climb up and crowd a basking light for the light, but not get sufficient heat. Insufficient ability to raise body temp. will cause serious health problems.
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4.3 Bearded Dragons (Rescues)
1.0 Corn snake (Rescue)
0.1 California King
4.5 Royal (Ball) Pythons (3 rescues)
1.1 Dogs (Rescues)
2.0 Cats (Rescues)
2.2 Humans
No, it's NOT a big house