You're fine where you are with that little fan blowing the heat away. Just keep your eyes on the leaf tips. If they start to go a bit brown and your leaves start to cup upwards a bit, raise it another 5 inches or so.Looking for the range I should have my 600 Watt HPS Air Cooled Hood Distance To 18 day old plants? Pic attached for reference. Currently around 14" from canopy to glass shield.
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