A 120w or 150w square LED will be enough. I am currently using two 209W LEDs in my tent.
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davemedinis Reviewed by davemedinis on . Replace 400W HID for LED??? I'm looking at replacing one 400W HID light which I'm currently using to cover two plants in a 4 ft x 4ft space? Ideally want to get maximum yield. Any suggestions please and an idea of price, make, wattage, etc? Seem to be having difficulty getting any good information for purchasing in UK. Any info greatfully appreciated!! Rating: 5