Why this product
The Fluker’s Repta-Clamp Lamp 5.5 Inch is the ceramic socket dome we recommend most often for reptile basking lamps, ceramic heat emitters, and UVB compact bulbs. The 5.5 inch reflector size is the right diameter for a defined basking spot in a 20 long, 36 by 18 by 18, or similar enclosure, the ceramic socket handles the heat from a 100 watt halogen basking bulb without softening or shorting, and the in line switch makes daily on and off easy without unplugging the cord every morning and evening.
For this review, we built our analysis from Fluker’s published spec sheet, recent Amazon owner photos, and direct comparison with three other clamp lamps. Fluker’s did not provide a sample. Where we cite a measurement, the source is the manufacturer spec sheet or aggregate owner reports.
The defining strength of this dome is the ceramic socket. Plastic socket dome lamps from hardware stores can soften or short under sustained heat from a 75 to 100 watt halogen bulb running 12 hours a day, and replacing a melted dome can take down the basking spot for days. The ceramic socket on the Fluker’s dome handles the heat indefinitely.
What Fluker’s claims (specs)
Fluker’s lists the Repta-Clamp Lamp 5.5 Inch with a 5.5 inch aluminum reflector dome, a ceramic E26 medium base socket rated to 150 watts, an in line cord switch, and a spring loaded clamp on the cord end. The dome is compatible with halogen basking bulbs, ceramic heat emitters, compact UVB bulbs, and incandescent bulbs.
The dome positions for basking spot use with bearded dragons, chameleons, juvenile snakes, tortoises, and other basking species. Setup time per the manufacturer is 5 minutes from unboxing to bulb installation.
Who should buy
This dome is the right call for any reptile keeper running a basking lamp, ceramic heat emitter, or compact UVB bulb in a screen top enclosure. The 5.5 inch reflector size is the right diameter for most enclosures and the ceramic socket handles the heat from any reptile bulb on the market without modification.
Buy this dome if you keep a basking species (bearded dragon, chameleon, uromastyx, tortoise) or if you need a CHE for nighttime ambient warmth. Skip this dome if your species needs only belly heat (leopard gecko, ball python in some setups), where the Zilla Heat Mat Mini is the better primary heat source. For larger enclosures where the 5.5 inch beam is too tight, the Fluker’s 8.5 inch version is the right pick.
Ceramic socket and why it matters
The ceramic socket is the single most important spec on a reptile clamp lamp. Hardware store work lights and basic dome lamps use plastic sockets rated to about 60 to 75 watts continuous. A reptile basking bulb at 75 to 100 watts running 12 hours a day exceeds that rating, and the plastic softens, deforms, and eventually shorts. The lamp fails, the basking spot disappears, and in worst case the failing socket sparks inside the dome.
Ceramic does not soften under heat at any wattage a reptile bulb produces. The ceramic socket on the Fluker’s dome is rated to 150 watts and lasts indefinitely under that load. Pay the extra few dollars over a hardware store work light, the basking lamp is on for half the gecko’s life and the socket failure mode is not worth saving a dollar.
Beam control and the 5.5 inch reflector
The 5.5 inch reflector concentrates the basking lamp beam into a defined hot spot on the basking surface, which is what most reptile species want. A bearded dragon basks on a defined rock or branch, not on a diffuse warm area, and the focused beam from a 5.5 inch dome holds the basking surface at 100 to 110 degrees Fahrenheit while leaving the cool side at 75 to 80 degrees Fahrenheit. That heat gradient is what allows the reptile to thermoregulate.
For larger enclosures (4 by 2 by 2 foot or bigger), the 5.5 inch beam may be too tight to cover a wide basking platform. The Fluker’s 8.5 inch version produces a wider beam at the same maximum wattage and is the right pick for those enclosures.
Switch and daily use
The in line cord switch is the small quality of life feature that separates this dome from cheaper alternatives. Reptile lighting runs on a daily cycle (typically 12 hours on for tropical species, 14 hours on for desert species in summer), and the simplest way to handle that cycle is a smart plug or wall timer. For keepers without a smart plug, the in line switch lets you turn the lamp on and off without crawling behind the enclosure to reach the wall outlet. A small thing, but the kind of thing that matters when you are doing it twice a day for years.
For more on how we evaluate reptile lighting products and other pet products, see our methodology page. For an under tank heat mat for belly heat species, the Zilla Heat Mat Mini is the standard pick.
Fluker's Repta-Clamp Lamp 5.5-Inch vs. the competition
| Product | Our rating | Diameter | Max wattage | Switch | Price | Verdict |
|---|---|---|---|---|---|---|
| Fluker's Repta-Clamp Lamp 5.5 Inch | ★★★★★ 4.5 | 5.5 in | 150 W | Yes | $19 | Editor's Choice Clamp Lamp |
| Zoo Med Mini Deep Dome 5.5 Inch | ★★★★★ 4.5 | 5.5 in | 100 W | Yes | $24 | Top Pick Deep Dome |
| Fluker's Repta-Clamp Lamp 8.5 Inch | ★★★★★ 4.5 | 8.5 in | 150 W | Yes | $27 | Best Larger Beam |
| Zilla Mini Halogen Dome | ★★★★☆ 4.3 | 5.5 in | 75 W | No | $17 | Best Budget |
Full specifications
| Dome diameter | 5.5 inches |
| Socket | Ceramic, standard E26 medium base |
| Maximum wattage | 150 watts per Fluker's listing |
| Switch | In line cord switch |
| Cord length | Approximately 6 feet |
| Compatible bulbs | Halogen basking, ceramic heat emitter, compact UVB, incandescent |
| Mount | Spring loaded clamp on cord end |
| Recommended use | Basking spot for bearded dragons, chameleons, juvenile snakes, tortoises |
| Power | Standard 110 volt wall outlet |
| Warranty | Limited manufacturer warranty per Fluker's listing |
Should you buy the Fluker's Repta-Clamp Lamp 5.5-Inch?
The Fluker's Repta-Clamp Lamp 5.5 Inch is the ceramic socket dome we recommend most often for reptile basking lamps, ceramic heat emitters, and UVB compact bulbs. The ceramic socket handles the heat from a 100 watt halogen basking bulb without softening or shorting, the in line switch makes daily on and off easy without unplugging the cord, and the 5.5 inch reflector concentrates the beam tightly enough to create a defined basking spot without overheating the entire enclosure.
Frequently asked questions
What bulb should I use with this dome?+
For a basking spot, a 50 to 100 watt halogen reptile basking bulb (Zoo Med, Exo Terra, Zilla brands) is the standard pick. For a ceramic heat emitter (heat without light, useful for nighttime ambient warmth), use a 60 to 100 watt CHE. For UVB, a compact UVB bulb fits the socket but a linear T5 HO fixture mounted separately is the more effective UVB option for most species. The dome handles up to 150 watts per Fluker's listing.
Will it clip onto my screen top?+
Most screen tops, yes. The spring loaded clamp grips a standard 0.5 to 1 inch screen top frame edge or shelf rim. For larger enclosures with thicker frame edges (some 36 by 18 by 18 enclosures), the clamp may not bite securely and most keepers add a separate lamp stand or hang the dome from the enclosure with safety chain. Always verify the clamp holds before turning the bulb on, a falling lamp can crack a glass terrarium and start a fire.
How hot does the dome itself get?+
Hot. With a 100 watt halogen bulb installed, the aluminum dome reaches surface temperatures of 200 to 300 degrees Fahrenheit on the inside reflector and 100 to 150 degrees Fahrenheit on the outside surface. Do not touch the dome while the bulb is on. The handle on the cord end is intended for repositioning while the lamp is hot, but allow the lamp to cool for several minutes before extended handling.
Can I use this with a thermostat or dimmer?+
Yes for a dimmer, with caveats for a thermostat. Halogen basking bulbs work with standard dimmers (Lutron, Hydrofarm). For a reptile thermostat (Inkbird, Vivarium Electronics), use a pulse proportional or proportional thermostat for halogen bulbs because on and off cycling shortens halogen bulb life dramatically. Ceramic heat emitters work fine with on and off thermostats because they have no filament to fatigue.
Is the cord long enough for my enclosure setup?+
The 6 foot cord reaches from the top of most enclosures to a wall outlet behind or beside the enclosure stand. For enclosures placed in the middle of a room or on a tall stand, plan an extension cord rated for the bulb wattage. Do not daisy chain power strips, the heat load from a basking lamp running 12 hours a day exceeds what most cheap power strips are rated for.
📅 Update log
- May 9, 2026Initial review published. Comparison set includes Zoo Med Mini Deep Dome, Fluker's 8.5 inch, and Zilla mini halogen.
