Exo Terra - UVB 200 HO T5 Bulb – 7% UVB (Ferguson Zone 2)

Partial and occasional sun baskers thrive when they can move freely between dappled sunlight and cool, shaded retreats. At Rachel's Reptile Resource, we believe in elevating reptile care through modern, science-backed husbandry—because cold-blooded companions deserve the same thoughtful care and rich environment as any other member of the family.

Manufactured in Germany to the highest quality standards, the Exo Terra Reptile UVB200 VHO T5 Bulb replicates the balanced UVA and UVB rays found in semi-shaded and partially sunny habitats. Featuring a 7% UVB output specifically calibrated for Ferguson Zone 2 (the Mesophotic Zone), this durable Very High Output (VHO) T5 bulb offers deeper UVB penetration, making it an ideal choice for taller terrariums and naturalistic enclosures. By supporting healthy Vitamin D3 synthesis and efficient calcium metabolism, it helps prevent Metabolic Bone Disease (MBD) while naturally stimulating your reptile's appetite, daily activity, and natural behaviors.

Key Features & Benefits

• Tailored for Ferguson Zone 2 (7% UVB): Specifically designed for partial or occasional sun baskers ("mesophotic" species) that regulate their UV exposure between sunlit basking spots and shaded retreats.
• Supports Essential Physiology & Vitality: Specialized phosphor blend closely mimics solar UVA and UVB rays to drive healthy Vitamin D3 production, maximize calcium absorption, prevent Metabolic Bone Disease (MBD), and stimulate natural appetite and activity.
• Superior Penetration for Tall Terrariums: Very High Output (VHO) T5 technology delivers reliable UV penetration across deeper and taller naturalistic or bioactive enclosures.
• German-Engineered Durability: Manufactured in Germany to strict quality standards for consistent, long-lasting output.
• Fixture Compatibility: Fits right into our Vivarium Electronics T5 HO Fixture, the Exo Terra T5 Terrarium Top, or any standard T5HO fluorescent fixture of matching wattage and length, pairing seamlessly with overhead heat lamps to establish an optimal heat and UV gradient.

Available Sizes & Standard T5HO Fixture Compatibility

(Compatible with our Vivarium Electronics T5 HO Fixtures and other standard T5HO hoods)

• 8W Bulb: Fits in a standard 12" T5HO fixture
• 24W Bulb: Fits in a standard 24" T5HO fixture
• 39W Bulb: Fits in a standard 36" T5HO fixture
• 54W Bulb: Fits in a standard 48" T5HO fixture

Keeper Husbandry Note

Creating a Safe Photogradient: Pair your UVB200 with overhead heating on the warm side of the enclosure alongside branches, foliage, and hides so your reptile can self-regulate both temperature and UV exposure. Keep in mind that mounting a fixture over a mesh screen top will reduce UVI output by roughly 30–45% depending on mesh density, and UVB bulbs should be replaced every 10–12 months (or monitored with a Solarmeter 6.5r) as invisible UV output naturally decays over time.

Equivalency

• Arcadia Equivalent: Arcadia D3 Forest (6% UVB T5) or Arcadia ShadeDwellerMax (7% UVB T5).
• Zoo Med Equivalent: Zoo Med ReptiSun 5.0 T5HO (5% UVB).
• Best For: Day geckos (Phelsuma), blue-tongued skinks, panther and veiled chameleons, corn snakes, Russian tortoises, and anoles.