Affordable bearded dragon lighting on a budget

Bad lighting is the single most common husbandry mistake with bearded dragons — wrong UVB output or incorrect basking temperatures cause metabolic bone disease and chronic illness that owners often don't spot until real damage has been done. Since you're working with a limited budget, I want to make sure we get this right first time rather than you spending money twice. To point you to the best affordable option: how big is your enclosure, what UVB and basking bulbs are you currently running (brand and wattage if you know them), and how old is your dragon?

Right, that coil bulb is the problem — compact coil UVB bulbs produce very weak, inconsistent UVB and are known to cause eye problems and calcium deficiency in bearded dragons. At 10 months your dragon should already be building strong bones, so this needs fixing. The good news is you can sort it without blowing your budget. For a 4x2x2, you need a T5 HO linear UVB tube — specifically a 12% or 14% output rated for desert species. The Arcadia Dragon Lamp 14% T5 HO is the gold standard and the 24" version with a controller unit is regularly available on Amazon UK for around £35–£40. That covers your UVB completely. For basking, a standard household 60w or 75w incandescent or halogen bulb works perfectly — you likely already have something suitable, so no extra spend there. The Arcadia kit is genuinely the one thing I'd tell every bearded dragon owner to prioritise, and it sits right at the top of your budget.

Yes, meaningfully better. Zoo Med Reptisun 10.0 T5 HO is actually a decent second choice if you truly can't stretch to Arcadia — it's well-tested and widely used. But the £10–15 no-name T5 tubes on Amazon are a real gamble: UVB output isn't regulated, they often degrade within weeks, and you can't verify the UV Index they actually produce. With a coil bulb already causing problems, the last thing you want is another underperforming bulb. The Arcadia Dragon Lamp 14% T5 HO starter kit includes the tube, reflector hood, and controller — that's the complete unit for your money, not just a bare bulb. It'll last 12 months before needing a replacement tube, which costs about £15. Spread over a year that's very reasonable, and your dragon will actually absorb calcium properly.

You need a temperature gun or digital probe thermometer — not a strip thermometer, those are useless for surface temps. Point it directly at the basking spot surface your dragon sits on. For a 10-month-old you want 40–42°C on the basking surface, with the cool end of the viv sitting at around 25–28°C. If your 75w bulb isn't hitting 40°C at the spot, raise it closer or swap to a 100w. If it's running too hot, raise the bulb or drop to a 60w. A basic infrared temperature gun is about £8–12 on Amazon and is honestly the most useful tool you can own for this setup — I'd grab one alongside the Arcadia kit if you can.

Inside, mounted at the top — and this is important. UVB is blocked by glass and most mesh, so fitting it inside the enclosure means your dragon gets the full output. Position it over the basking side so your dragon basks under both heat and UVB simultaneously, which is how they behave in the wild. The Arcadia hood clips or sits along the top interior easily in most wooden vivs. Keep the tube no more than 30–40cm from where the dragon basks for effective UV Index levels. Replace the tube every 12 months even if it's still visibly lit — UVB output drops long before the light stops working, and that's a trap a lot of owners fall into.