leaf twisting sideways

Hi everyone !!
What causes the leafs to curl sideways when growing.? Leaf are not curling under or up, except for sideways all branches.
FF soil FF nutes just started 1/2 tsp
400 watt mh 18/6 day time,lite is about 18 inches away..
ph 6.9 intake run off is 6.72
temp reaches 80 to 90 and temp goes down to about 50 lights off and placed a heater in there when lights goes off..
good exhaust and intake
this is a clone

I don't think it's serious, I had them, and still had a full harvest. In my experience, they do that with indoor lighting. None of my outdoor grows had any twisting leaves. I wish I could give you a better answer, but that has been my experience.

Good luck!

I would say its a heat problem. How old is the plant and what size?

If it is only small and young then i would say coupled with the room temps, your lamp may be too close..

It is about 12 inches tall and has lots of branch that the leafs are twisting sideways.
Light is 18 inches away and my others are closer and they a very few twisting..
I don't think it the heat, I am looking more into the temp dropping to cold.

I don't think that grow big did that.
What about not having enough roots.? I transplant yesterday into 3 gal pots and there wasn't a lot of roots..

Got said:

It is about 12 inches tall and has lots of branch that the leafs are twisting sideways.
Light is 18 inches away and my others are closer and they a very few twisting..
I don't think it the heat, I am looking more into the temp dropping to cold.

I don't think that grow big did that.
What about not having enough roots.? I transplant yesterday into 3 gal pots and there wasn't a lot of roots..

Click to expand...

hard to tell without the pic but what ur describing is similar to what happednt omine a a wek or so back.. my plants were a lil over 3 weeks old and i hadnt nuted them yet. my leaves were curling to the side a lil but nothing too bad. i nuted with half strenth, now they look better and no twisting on new growth.. as u said u started ferting already. if u waitied a lil late like i did i think ull be ok.. let u s kno how it turns out

Got said:

It is about 12 inches tall and has lots of branch that the leafs are twisting sideways.
Light is 18 inches away and my others are closer and they a very few twisting..
I don't think it the heat, I am looking more into the temp dropping to cold.

I don't think that grow big did that.
What about not having enough roots.? I transplant yesterday into 3 gal pots and there wasn't a lot of roots..

Click to expand...

Yeah thats what i mean when i say heat.
A heat / temp problem.
obviously a 40 drop in temp is too much.
Try and get it to 10 drop.

lpoolfc08 said:

Yeah thats what i mean when i say heat.
A heat / temp problem.
obviously a 40 drop in temp is too much.
Try and get it to 10 drop.

Click to expand...

Got a heater in there for the night time when lights goes out...

diamonddave said:

. i nuted with half strenth, now they look better and no twisting on new growth.. as u said u started ferting already. if u waitied a lil late like i did i think ull be ok.. let u s kno how it turns out

Click to expand...

I transplanted yesterday into F.F. soil and yea think I should already give some Fert.tiger bloom, instead of grow big food.

Putting in my two cents. I agree. I have a perpetual and noticed mine doing the same thing last couple weeks. Im in a basement and these hot days and cool nights are messing with my temps as well. So thats exactly what it is. Specialy because ive changed nothing when it comes to nutes and i change and clean reservoirs weekly religiously.