Best value grow light for a 4 x 4 or 120cm x 120cm grow tent

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I have tested 13 of the best grow lights for a 4ft x 4ft or 1.2m x 1.2m grow tent and compare them for PAR output, efficiency and value for money.

Full blog post with DISCOUNT LINKS & PAR charts here: https://migrolight.com/blogs/grow-lig...

The 4ft x 4ft or 1.2m x 1.2m grow area is one of the most popular grow tent sizes and also a common modular size for commercial grow setups. There are a large number of grow lights on the market for 4 x 4 grow areas including a lot of commercial grade fixtures so there is a lot of competition and great value for money.

To maximise the potential yield from the space you need about 400 to 500 watts of high efficiency LED lighting to achieve an average of 700 to 800 µmols PAR intensity. Some fixtures are in the 800 watt range and designed to delivery very high average PAR intensity of about 1,200 µmols which would require CO2 supplementation to make use of the high light intensity.

Ideally the light fixture will be suitably sized to cover the area evenly i.e. the fixture is rectangular and close to the physical size of the grow tent. The PAR chart is shown below for each model so you can judge the best solution for your grow space.

Spectrum
All of the lights have a mixture of mid temperature white LEDs with 660nm reds to improve their electrical and photosynthetic efficiency. Therefore all of the grow lights tested are full spectrum and suitable for growing from seed to harvest.

Grow light comparison method
The comparison chart uses the results from Shanes PAR output and efficiency tests to calculate and compare the total cost of each fixture to deliver an average PAR of 750µmols/m²/second over 1m² grow area over a 3 year period. The 3 year costing includes the cost of the fixture and adds the electricity costs at 17c/KW hour over 14 hours per day average.

Lights tested:
Spider Farmer SE7000
MARS Hydro FC8000
MIGRO ARAY 8
Pandvillow MATE 400W
Growers Choice ROI-E420
Hyphotonflux HPF4000
Viparspectra KS5000
MARS Hydro FC4800
Spider Farmer SF4000
Forever Green Indoors Uniformity Pro flex
Protech 430W
Lumatek/Photontek 465W Pro

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