Hydroponic Heating & Control

Heat mats, heat bars and thermostats are climate control tools that keep your hydroponic grow room or propagation tray at a stable temperature. Whether you're germinating seeds, rooting clones or maintaining a full grow room, this range includes heat mats for seedling trays through to Cultiv8 thermostats and controllers for precise temperature automation.

Why Temperature Control Matters

Temperature stability is critical during germination and propagation — cold root zones slow seed germination and clone rooting, while temperature swings elsewhere in the grow room stress plants and reduce yield. A heat mat raises root zone temperature for faster, more even establishment, and a thermostat or controller lets you set and hold a target temperature automatically, rather than checking and adjusting manually throughout the day.

What's In This Collection

Propagation heat mats for seedling and clone trays

Heat bars for warming larger propagation areas

Digital thermostats for precise temperature control

Cultiv8 heating and climate controllers

How to Choose Heating & Control Equipment

Heat mat vs heat bar

A heat mat suits a single tray of seedlings or clones, warming the root zone evenly from below. A heat bar covers a longer run and suits larger propagation benches or multiple trays side by side.

Do you need a thermostat?

Running a heat mat without a thermostat means constant on/off heat with no feedback, which can overheat delicate seedlings. A thermostat with a probe monitors actual root zone or air temperature and switches the heat source off once your target is reached — worth adding for anything beyond a single small tray.

Matching temperature to grow stage

Most seeds and clones root best around 24 to 28°C at the root zone. If you're just starting out, a simple heat mat and thermostat combo is the easiest way to hold that range without guesswork.

A-Grade Hydroponics has been Melbourne's hydroponic specialist since 2013, testing every product before it hits the shelves. Shop Cultiv8 heat mats, heat bars and thermostats in-store or online, with personalised technical support from seed to harvest.