i run my hps at 6 inches above plant tops no cooling just cross breeze, temp at tops 78-84 and they do great

what is the size differance between the plants?
were the t5s starting to curl too? 2-21
phatsesh101 Reviewed by phatsesh101 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