leaves are curling inwards,yellow and dry

TropiKanna

Well-Known Member
What size hps?

This is the rule of thumb I used to use before I switched over to LED

150-175w - 24 inches above canopy
250w - 32-36 inches above canopy
400w - 36-42 inches above canopy
600w - 36-42 inches above canopy
1000w - 48-54 inches above canopy
 
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