What's the temp under the HPS and do you have a fan blowig across the tops of the plants ? Hps cause heat and the plant transpires more. Light maybe tooo close or higher temps. Fill out he problem form.
LOC NAR on probation Reviewed by LOC NAR on probation on . Curling Day 18 flowering. 400W HPS on first pic with curling. 3 gal pots soil grow. T5's are not curling the HPS is. Any ideas? All nutrients are the same for HPS and T5's The only difference is the amount of fan, which could contribute to cold or the HPS. Any ideas? Rating: 5