No expert here, but it seems like you would want the lights closer to the plants, not further away. I run my lights (fluorescent) about 2" from the tops of the plants from start to finish (can't burn 'em with cool lights). Seems like the same would be true for LED.
Token LaRoche Reviewed by Token LaRoche on . Progrow 180 - Grow Box - Possible LED Burn. Help! Hi all, long time no see! Just in the middle of setting up my new led grow box. The plan: to make a very small compact unit that could easily be modified. My setup uses storage boxes that can be stacked - if i run out of head room i just add another box! The environment is controlled be by two 12v temperature thermostats - one controls a 12v pc fan, the other a 12 heater. Uber simple uber cheap! The boxes can hold 84lt, I'm currently using two stacked: 1.4ft by 2.25ft by 2.5 ft cubic Rating: 5