anyone? ive searched the forums and all the pictures of curling leaves dont quite look like mine...so i dont have an answer...i cant take a picture myself either...do i need to give more info?

it's outside, temps between 60 at night to mid 80's in the day
not using potting soil, just soil from the ground with some bone/blood meal added...it's bagseed and seems to be mexican sativa dominant..
it gets about 1/4 gallon of pond water every 3 days wether it rains or not...
its about 2 1/2 feet tall and about 6 weeks old.. all the new growth is curling upward and in on itself to form almost a complete circle... a few of the lower fan leaves have died and i removed them... no sign of bugs or stem damage...
and i know the pond water is fine because my others are doing great...any ideas?