Here is more info: Remember the plants under the T5's see the same nutrient schedule and watering and and circulation and they are great. Just the HPS ones are the problem.

S=traditional soil
E-indoor
CSL-FFOF
SCLR-6.8 pH
E-RO
E-6.8 pH
E-1 month veg, 19 day flower
E-1tsp liquid karma, 1tsp earthjuice bloom, 1tsp kabloom
E-every other watering for nutrients
E-400w HPS 9 inches
E-Air temperature 80
E-Air % Relative humidity around 15
E-12/12
E-2 fans and open door into the house
TR-Did you pre-soak your media in pH correction: No
turksteelman Reviewed by turksteelman 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