Quick verdict: Arcadia ProT5 is a flexible high-output UVB system with a good reflector and clear lamp choices. Its strength is also the reason to plan carefully: the 12% and 14% lamps can overshoot a close basking position, especially without shade.
The kit combines a T5 HO fixture, removable reflector and Arcadia lamp. It can link up to ten units and is sold with 6% Forest, 12% Desert or 14% Dragon tubes. That makes it easier to match different enclosure heights without changing the whole fixture.
| Setup or factor | Published or practical value | Use |
|---|---|---|
| 6% Forest | UVI 4.5 at 300 mm | Medium forest or closer controlled setups |
| 12% Desert | UVI 8.5 at 300 mm | Taller enclosures and stronger exposure |
| 14% Dragon | UVI 10.5 at 300 mm | High-demand setups with substantial distance |
| Minimum published distance | 250 mm | Treat as a floor, not a universal target |
What the published numbers mean
Arcadia publishes center readings without mesh. At 500 mm, the listed UVI values are 2.5, 3.8 and 4.6 for the 6%, 12% and 14% lamps. These are planning figures. Reflective decor, mesh and fixture position can shift the result in a real enclosure.
Mounting and coverage
Run the tube across the basking zone rather than across the full ceiling. This leaves a naturally dimmer side. Secure the fixture so cleaning cannot change its angle, and use guards where an animal could touch the lamp.
Mesh and distance
A dense top can remove a meaningful share of output. Do not compensate by guessing. Measure below the mesh at the basking height and compare several points, as described in our mesh loss guide.
Daily use
Put UVB and daylight on a dependable reptile light timer. Keep heat control separate. The ProT5 is a light fixture, not a thermostat or basking heat source.
Who should skip it
Very small, low enclosures can be easier to tune with a lower-output compact system. Read our ShadeDweller review before forcing a powerful fixture into a short space.
A commissioning routine that catches mistakes
Assemble and run the system before the animal depends on it. Photograph the final positions, label cables, and compare the working zone with an independent instrument. Test one normal day, one night transition and a short power interruption. The goal is not a perfectly flat chart. It is a stable, understandable gradient with safe recovery.
Recheck after cleaning because fixtures, probes and branches rarely return to the exact same position by accident. A two-minute baseline check is cheaper than troubleshooting weeks of unexplained behavior.
Common mistakes
- Selecting 14% because it sounds more complete
- Using the manufacturer table as a substitute for enclosure measurements
- Covering the entire roof and removing the shade route
- Letting spray hit the fixture
- Forgetting to log tube age and baseline output
How to verify the result in a real enclosure
Lighting work becomes much easier when the enclosure is treated as a map rather than a box with one reading. Mark the basking center, both edges of the perch, the warm hide entrance and the darkest retreat. Take measurements at the height of the animal’s back. This reveals whether the reptile can make small choices instead of moving between two extremes.
Visible light, UVB and heat overlap during the day, but each should be evaluated separately. A bright enclosure can still have weak UVB, and a strong UVB fixture does not create the correct basking surface temperature. Keep the lighting schedule consistent, control heat with suitable hardware, and change only one part before repeating the map.
A practical seven-day check
- Day one: photograph positions, record room conditions and capture baseline readings.
- Day two: review the full day-night transition and check that schedules occurred at the intended local time.
- Day three: inspect mounts, probe restraints, plugs, tubing and any area exposed to moisture.
- Day four: compare the main reading with an independent instrument placed beside it long enough to stabilize.
- Day five: review animal access and behavior. Confirm that equipment does not block hides, climbing routes or the cool zone.
- Day six: simulate one safe failure, such as a short internet loss or power interruption, then check recovery.
- Day seven: save the final settings and observations in the enclosure record.
Repeat the short version of this audit after major cleaning, seasonal room changes or equipment replacement. The point is not constant tinkering. It is catching the few changes that can quietly alter a previously stable habitat.
Related Reptile Tech Lab guides
- best reptile UVB light guide
- UVB through mesh guide
- Solarmeter 6.5R review
- reptile light timer guide
Frequently asked questions
Does ProT5 include a lamp?
Product packages commonly pair the fixture with a specific Arcadia lamp, but regional listings vary. Confirm the exact box contents before purchase.
Can ProT5 sit above mesh?
Yes, if the remaining output at basking height is measured and suitable.
Can units be linked?
Arcadia states that up to ten ProT5 units can be linked. The electrical layout still needs a safe load calculation.
Is 12% better than 6%?
It is stronger, not automatically better. Choose by target UVI, distance and enclosure geometry. See our UVB selection guide.