possible light burn help me tanx

Nurse
Nursestarted grow question 6y ago
I have two lights, spider sf 1000 and viparspectra p1000. My plants have burn marks. I do not know if it is from lights or fertilizers. I now keep them 18 inches apart. Can anyone tell me the light distance table? How far should they be now?
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Setup. Lighting
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Nurse
Nurseanswered grow question 6y ago
😁
Organoman
Organomananswered grow question 6y ago
Can't see much wrong. Not all leaves are 100% perfect, 100% of the time.
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