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HID 600w ?
Growstickanswered grow question a year ago
I used to grow with a 600W HPS in a 1m² tent and the results were fantastic. The only thing you will have to think about is whether your environment can take the additional heat it will kick out, but if you have adequate ventilation and enough headspace to allow for a few more inches between the lamp and the plant then you'll be fine.
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