Supplement
UVB, if provided: How Gargoyle Geckos Use It
Situational supplement
Quick answer
UVB, if provided is used low-output uvb on 10–12 hours a day. Not strictly required if the MRP diet is providing D3 reliably, but low-output UVB (roughly Ferguson zone 1, such as a 2.4–5% T5 tube) is increasingly recommended for general health, not just D3 synthesis.
Frequency
Low-output UVB on 10–12 hours a day
Role
Not strictly required if the MRP diet is providing D3 reliably, but low-output UVB (roughly Ferguson zone 1, such as a 2.4–5% T5 tube) is increasingly recommended for general health, not just D3 synthesis. If you run UVB, this is not a reason to add more D3 dusting on top — the MRP diet's built-in D3 already covers it.