my slh under 600 watt MH air cooled in rock pebbles pH 5.5/5.9 EC at 1.5 6 weeks old still in veg temps between 80/88f lights on 65/72f lights off nutrient temp at75/80f some of the leafs are curling like a taco not sure why? any ideas anybody not sure if I should put her into flowering next week due to this problem http://www.youtube.com/watch?v=DesnSe7ww4g&context=C4ef4b5aADvjVQa1PpcFNiBq7dm_7JBEwtbiervYEsl4c-VojL2Jw=