A bearded dragon is one of the most popular first lizards — and one of the easiest to get wrong at setup stage. Most beginner problems (poor appetite, lethargy, shedding trouble) trace back to the same few things: a tank that is too small, UVB that is too weak or too far away, or heating with no thermostat.
Use this checklist before your dragon arrives, not after. Set everything up, switch it on, and let temperatures stabilise for at least 24 hours first.
The quick checklist
- Enclosure: at least 120 gallons / 4×2×2 ft for an adult
- Basking spot: 100–110°F (38–43°C) for juveniles, around 100–105°F for adults
- Cool side: 75–85°F (24–29°C)
- Night temperature: no lower than about 65°F (18°C)
- UVB: a proper reptile UVB tube, replaced on the manufacturer’s schedule
- Thermostat controlling every heat source
- Digital thermometer on the warm side and the cool side
- Basking platform, hide, and a shallow water dish
- Safe substrate for a beginner
- Feeder insects, leafy greens, calcium with D3, and a multivitamin
If you can tick all of those, you have the essentials. The rest of this guide explains each one.
1. Enclosure: go big enough the first time
Bearded dragons grow fast, and a small tank makes a proper temperature gradient almost impossible. For an adult, aim for a 120-gallon enclosure — roughly 4×2×2 ft — rather than buying a small starter tank you will need to replace within months.
A front-opening enclosure makes feeding, handling and cleaning much easier than a top-opening tank, especially once your dragon is tame and expects to come out. See the habitat sizes on our Enclosure & Habitats page, including PVC enclosures and complete starter kits, and choose the size for an adult dragon, not just a baby.
Checklist:
- Secure, escape-proof enclosure with good ventilation
- Room for a warm basking zone and a distinctly cooler zone
- A basking rock or branch that lets your dragon sit close to — but not touching — the heat lamp
- At least one hide on the cool side, so your dragon can retreat and feel secure
2. Heating: a gradient, not one hot box
Bearded dragons need to move between warm and cool areas to regulate their body temperature. One uniform temperature is not enough.
- Basking surface: 100–110°F (38–43°C)
- Warm side air: around 90°F (32°C)
- Cool side: 75–85°F (24–29°C)
- Night: can drop, but should stay above about 65°F (18°C)
Use a basking bulb in a suitable lamp fixture, and put every heat source on a thermostat — an unregulated heat mat or bulb can overheat and burn your dragon. A dimming or proportional thermostat is ideal for basking lamps; an on/off thermostat is a minimum. Compare thermostat and heat-source types on our Heating & Lighting page.
Beginner mistakes to avoid:
- Guessing temperatures instead of measuring both ends with a digital thermometer
- Placing the thermometer in the middle of the tank, where it tells you neither end’s temperature
- Using a heat rock, which can cause burns
3. UVB lighting: the one beginners most often get wrong
Bearded dragons need UVB to make vitamin D3 and absorb calcium. Without enough UVB, they can develop metabolic bone disease — a serious, preventable condition.
- Use a reptile-specific UVB tube (commonly a T5 HO tube), not a household bulb
- Mount it inside or above the enclosure at the distance the manufacturer specifies — UVB strength drops sharply with distance, and mesh screens block a significant amount
- Make sure your dragon can bask within the UVB zone, on its basking platform
- Replace the tube on the manufacturer’s schedule, even if it still lights up — UVB output fades long before visible light does
- Put lights on a timer for a consistent day/night cycle, roughly 12–14 hours of light in summer and 10–12 hours in winter
If you are unsure which UVB strength or fixture suits your enclosure height, ask before you buy — this is not a detail to guess at. Our Heating & Lighting page lists UVB tubes, reflector fixtures, thermostats and timers by type.
4. Substrate: keep it simple and safe at first
For a beginner, especially with a juvenile, the safest substrates are the simplest: paper towel, reptile carpet, or tile. They are easy to clean, make it easy to spot droppings and health problems, and carry no impaction risk from accidental ingestion while feeding.
Loose substrates (sand, soil mixes, bioactive setups) can work for experienced keepers with the right husbandry, but they add cleaning and impaction risks for a first dragon. Start simple, learn your dragon’s habits, and upgrade later if you want to. Our Substrate & Decor page is an overview for now — it will be expanded once the full substrate product list is added.
5. Food: insects + greens, in the right balance
Bearded dragons are omnivores, and the balance changes with age:
- Juveniles: mostly feeder insects, offered 2–3 times a day, plus a small daily salad
- Adults: mostly leafy greens and vegetables, with insects every other day or a few times a week
Good staple insects: dubia roaches, crickets, and black soldier fly larvae. Offer insects no wider than the space between your dragon’s eyes, and remove uneaten insects — crickets left overnight can bite a resting dragon.
Good daily greens: collard greens, mustard greens, dandelion greens, and squash. Avoid iceberg lettuce (almost no nutrition) and be cautious with spinach and citrus, which are not good staples.
Supplements:
- Dust insects with calcium with D3 on most feeding days for juveniles, and several times a week for adults (adjust to your UVB setup)
- Use a reptile multivitamin once or twice a week
- Always provide fresh water, in a shallow dish your dragon cannot tip over easily
See the supplement and feeder types on our Food & Supplements page — no prices are listed there for items that are not already shop products, so use it as a checklist of types to source, not as a price list.
6. Handling, shedding and daily routine
- Give a new dragon a few days to settle in before handling, then start with short, calm sessions
- Support its body fully and never grab it by the tail
- Spot-clean daily, change water daily, and do a full clean regularly
- A healthy dragon eats regularly, basks, explores, sheds in large pieces, and passes firm droppings
- Baths are not a substitute for correct humidity or hydration, but a shallow lukewarm soak can help a dragon that is shedding or constipated — ask a reptile vet if problems persist
Useful tools for daily checks — a digital thermometer/hygrometer with probe, an infrared temperature gun, feeding tongs, and a reptile-safe enclosure cleaner — are listed on our Accessories page.
7. Common beginner mistakes — the short version
- Tank too small for an adult dragon
- UVB too weak, too far away, or never replaced
- No thermostat on the heat source
- Measuring temperature in the middle of the tank, not at both ends
- Feeding insects that are too large, or leaving uneaten crickets in overnight
- Loose sand for a juvenile
- Handling too soon, or too roughly, in the first week
Bearded dragon setup FAQ
How big a tank does a bearded dragon need?
A 120-gallon / 4×2×2 ft enclosure is the usual minimum for an adult. Smaller tanks cannot hold a proper warm-to-cool gradient.
Do bearded dragons need UVB?
Yes. UVB is essential for calcium absorption. A proper reptile UVB tube, at the manufacturer’s recommended distance and replaced on schedule, is not optional.
What temperature should a bearded dragon’s basking spot be?
Around 100–110°F (38–43°C) on the basking surface, with a cool side of 75–85°F (24–29°C).
What do baby bearded dragons eat?
Mostly small feeder insects 2–3 times a day, plus a daily salad of leafy greens. Adults shift to mostly greens, with insects a few times a week.
Can two bearded dragons live together?
No — house bearded dragons individually. Cohabitation commonly leads to stress, competition, and injury, even between females.
Before you buy
Set up first, test temperatures for 24 hours, and only then bring your dragon home. If you already have a dragon and something on this checklist is missing — especially UVB or a thermostat — fix that first; it matters more than decor.
Browse the shop for bearded dragons and starter supplies, and if you are unsure which enclosure or UVB setup fits your space, reach out to the team before you order.
This guide is general care information for beginners, not veterinary advice. If your dragon stops eating, has stuck shed, swollen limbs, or shows signs of illness, contact a reptile veterinarian promptly.