LED & HPS Grow Lights

Choosing the Right Grow Light

The light is doing the heaviest lifting in any indoor setup, it is what your plants are actually photosynthesising off, so it is worth getting right before anything else. We stock full spectrum LED grow lights from SANlight and Medic, plus HPS options including lamps, reflectors, and ballasts, sized for everything from a 60x60cm propagation tent through to a 150x150cm flowering room.

Full spectrum LED has become the default for most Australian growers, and the reason is straightforward: less heat, lower running costs, and a fixture that lasts well beyond a single grow. A quality full spectrum LED plant grow light delivers the complete wavelength range plants need from seedling through to harvest without the running costs or heat management that HPS demands. HPS still has a place though, particularly in cold climates where the extra heat it throws off genuinely helps during winter instead of working against you.

Matching wattage to your tent footprint matters more than chasing the highest number on the box. A light built for 120x120cm run in an 80x80cm tent wastes electricity and adds heat you don't need, while an undersized light in a bigger tent leaves the corners underlit. Check the recommended coverage on each fixture before you buy, not just the wattage.

Orders over $350 qualify for free standard shipping to VIC, NSW, QLD, SA and ACT, most full spectrum LED fixtures on this page qualify on their own without needing to add anything else to your cart.

Frequently Asked Questions

Is LED or HPS better for hydroponics?
Full spectrum LED runs cooler and cheaper for most Australian conditions. HPS can still make sense in genuinely cold climates where the extra heat reduces your winter heating costs.

What size grow light do I need for my tent?
Match the fixture to your tent's footprint, not just wattage. Each light listing shows the coverage area it is designed for, a full spectrum LED sized for 120x120cm will underperform in a 150x150cm space regardless of the wattage on the label.

How high should I hang my grow light?
Depends on the fixture and growth stage. Generally 30 to 60cm above the canopy for LED, adjusting closer as plants mature and can handle more intensity.

Do I need to dim my light for seedlings?
Yes. Most full spectrum LED grow lights include dimming for exactly this reason, start low for seedlings and clones and increase intensity as plants establish.

Do grow lights qualify for free shipping?
Yes. Orders over $350 and under 12kg qualify for free standard shipping to VIC, NSW, QLD, SA and ACT. Most single grow light fixtures easily meet both the price and weight requirements on their own.