Check this week's weather. If a clear morning under 80°F is coming, plan a 20-minute outdoor session for your animal.
Outdoor cage time in summer — the UVB no bulb can match.
Twenty minutes of unfiltered morning sun once a week through summer is worth more vitamin D synthesis than any indoor bulb provides.
On a clear summer morning between 8 and 10am, the UVI in direct sun outside ranges 4–7 — well above what any indoor T5 HO bulb produces. A panther in a screen cage placed in direct morning sun for fifteen to twenty-five minutes (with shade available within the cage) gets a UVB dose that compounds across the season into noticeably stronger calcium uptake.
Rules: never glass between the animal and the sun (glass blocks UVB), always provide a deep shade option inside the cage, never above 85°F ambient, never unattended, and watch for any signs of overheating. Twenty minutes once a week from June through August is the sweet spot for most panthers in the continental US.
DSQUARED Reptiles — Living Art. Curated Genetics.
From the field notes archive.
The morning baseline photograph.
A single weekly photo, taken at the same hour and angle, will tell you more about your care than any forum thread ever could.
Tightening screen tension on a year-old cage.
After twelve months of misting cycles and live plant weight, screen panels sag in ways that quietly compromise climbing surfaces.
A 72-hour gutload window for dubia roaches.
Dubia gutloads peak somewhere between 48 and 72 hours after the colony moves onto a fresh diet. Here's the schedule we run.