The Unlikely Gardener · Grow light guide

Find your SANSI grow bulb.

Choose your models, then compare price, power and light intensity at the same distance above your plants.

Manufacturer claims, not independent tests.

Choose your models

Check a model to add it. Open “Specifications & product notes” when you need more detail. Filtering does not clear your selections.

Recorded prices are in USD, not live offers. Check the manufacturer for your region’s price and availability. Photos are not to scale.

Before you compare

PPFD measures light intensity at a stated distance, not total light output. The distance control updates PPFD and footprint values together. “Not listed” means the manufacturer gives no figure we could verify at that distance, not zero output.

What do these measurements mean?

Footprint diameter is the diameter of a circle with the same area as SANSI’s illustrated footprint. It is not a radius, a guaranteed effective-growing diameter, or a boundary meeting a minimum PPFD. The chart does not establish a minimum usable PPFD or say that the whole footprint receives the listed intensity. A larger illuminated area can have much weaker light.

PPF is total light output; PPFD is light intensity at a particular distance. Colour temperature describes how warm or cool the light looks, not its complete spectrum. PPF per watt is calculated from the manufacturer’s PPF and rated wattage, not independently measured efficiency. A higher wattage does not by itself guarantee better growing results.

These are manufacturer claims, not independently tested UG results. Specifications can vary by regional or spectrum option. Check the selected product details before ordering. Not all manufacturer details have been independently verified.

Prices are US storefront base prices in USD as recorded on the review date, not current offers or Canadian prices. Manufacturer specifications were reviewed separately. Region labels were recorded at the same time and are not a live stock check.

“Waterproof” in a model name is the listing’s description; consult the model’s stated IP rating and manufacturer safety guidance.

A practical comparison from The Unlikely Gardener. Product photos remain the property of their respective rights holders.

Important Notice
About these numbers: PPFD and DLI values are estimates for learning, not measurements. They are calculated from the meter reading you enter, so their accuracy depends on that reading being taken at the closest leaf with the sensor facing the light. The plant is a single representative Alocasia, not your plant. Bulbs are treated as one point of light. Tubes and panels are treated as evenly spaced LEDs with a smooth beam spread based on the beam angle you enter. Real fixtures vary with LED layout, lens and reflector design, and how the beam angle was measured. Shadows are calculated from other leaves only. Bounce light is treated as an even fill. Light passing through leaves, reflections from nearby surfaces, and light on leaf undersides are not counted. For decisions about your own setup, measure several leaves with a reliable light meter and use this tool to understand why the readings differ.