What light do you have them under? Are the serrations on the leaves turning up? A little more info on the environment they are in could help.i am have to keep messing with the air conditioner trying to find the right temp in my room. its so old it has off and on. i keep messing with the lights trying to find what height is right. leaves are telling me something is off and i think its the heat. here they are 4 days after their new light.