@Med_in_Tropic, Hi, Yeah i use a 300w led light and the distance to the plant at most was 30cm at the start with and now as the plant has grown its about 15-20cm away from the LED light and isn't currently showing any issues with that. You should have a look at this persons diary if you haven't already. They have done some very impressive computer case grows. growdiaries.com/diaries/9285-computer-case-stels-micro-grow
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