Photontek SQ300W PRO LED grow light review

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UK and European sister brand Lumatek ATS300W version here: https://lumatek-lighting.com/lumatek-... (no discount code for this option, sorry)

The Photontek SQ300 PRO LED grow light and the European version ATS300W are in an interesting concentric square led bar form.

It is full assembled and only requires plugging in and hanging to setup. There is a 10ft or 3.5m long power cable and onboard dimming controls.
The light output is full spectrum and suitable for growing from seed to harvest. There are also added far red LEDs to broaden the spectrum up to 750nm.

The light spread is excellent and allows for good coverage over its specified 3.5ft x 3.5ft (1m x 1m) grow area. It delivers an average 638 µmols/m²/second which is a good performance level. The system efficiency is 2.02 usable PPF per watt which is a good level.
The FAR red LED output is not measured in the PAR test but is about 8% of the fixture output. If added to the total output calculation the system efficiency from 400nm to 750nm is 2.18 usable PPF per watt

Our test result is the efficiency of the lighting system in terms of PAR reaching the canopy per watt consumed. This will always be lower than the published PPF/watt efficiency which is calculated in an integrated sphere and does not take into account reflectance losses.


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