taco leafs/curling

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=

ak47kush said:

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=

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Water temp should be between 68 & 72 optimum. Those are looking mighty healthy....... don't worry so much about the bottom leaves. Those healthy top leaves are looking great..... nice & fat & bushy. You might back off on the nutes. a little, that's a common problem. Many times the bottom leaves are more susceptible to the water & nutes. changes. Plenty of aeration is essential.

res temps are to high

Your temps are 10 degrees too warm. Lights on should be 75-78. Taco leaf is heat stress.