The Heat & Hide Blog

By Dana Calder · Founder

This is where I write up the real keeping — what it's actually like to be a beginner getting a first vivarium right. Dialling in a heat gradient with a probe and a thermostat. The first-enclosure mistake that nearly cost my first gecko. Switching from a coil bulb to a proper T5 HO UVB, building a bioactive base, and the humidity battles nobody warns you about. Honest first-hand experience, never spec rehash — and always general husbandry, verify for your species, vet for health.

A digital thermometer probe placed on the floor of a terrarium.

Reading Your Numbers: Why I Threw Out the Stick-On Dial

A stick-on dial reads the glass, not the floor your animal sits on. Here's why I switched to digital probes, what I actually measure, and how to read the numbers that matter.

A small glass terrarium starter setup with a clip lamp.

The Cheap-Kit Trap: What the All-In-One Starter Kit Doesn't Tell You

The all-in-one starter kit looks like the easy way in — it's exactly how my first setup went wrong. Here's what these kits get right, what they quietly leave out, and where the money actually goes.

A simple terrarium with a hide and water dish.

How I Set Up a New Arrival (and Why I Quarantine)

The first weeks with a new reptile are where I slow down. Here's how I set up a simple, easy-to-watch quarantine for a new arrival — and why a plain setup beats a beautiful one at first.

A planted terrarium floor with naturalistic substrate.

Substrate and Humidity: Why It's a Per-Species Decision

There's no universal best substrate, because substrate is really a humidity tool. What's right for a ball python is wrong for a leopard gecko. Here's the per-species way I think about it.

A bearded dragon basking on a rock under a heat lamp.

Setting Up a Bearded Dragon Basking Spot That Actually Works

Beardies are hard-basking desert lizards, and the basking spot is where new keepers most often get heat wrong. Here's how I set up a basking spot that holds its sourced target.

A ball python coiled inside a hide in a wood-grain vivarium.

Ball Python Enclosure Size, Honestly

Ball python sizing gets argued about endlessly. Here's the honest version from keeping one: footprint, security and a real gradient matter more than the 'they like it tight' myth.

A bearded dragon basking under a heat lamp at the warm end of a vivarium.

Building a Real Thermal Gradient (Not Just a Warm Tank)

A warm tank isn't a gradient. Your animal needs a warm end AND a genuinely cool end so it can thermoregulate. Here's how I build and tune one with a thermostat and a probe.

A linear UVB tube fixture mounted over a reptile terrarium.

Coil vs T5 HO UVB — and the Distance That Actually Matters

I started with a coil UVB because the box said reptile light. Switching to a T5 HO tube was a turning point. Here's the real difference — and why distance matters as much as the bulb.

A basking lamp over a terrarium warming a basking spot.

Why a Thermostat Is Non-Negotiable (I Learned the Hard Way)

A heat source with no thermostat just runs flat out — and that's how warm ends overshoot. Here's why I treat a thermostat as the one piece of gear you never skip.

A leopard gecko resting in a planted terrarium with a hide.

My First Enclosure Mistake: A Stick-On Dial, No Thermostat, and a Stressed Gecko

My first leopard gecko went into the setup the kit told me to build. Within weeks it was hidden, pale and off its food. Here's what I got wrong — and how a probe and a thermostat fixed it.