unknown problem

ive got a small setup, 3 lights, 3 plants, there all just afew inches tall, and theyre all from the same strand, but one of these plants seems to have a week stem, ill check on it sumtimes and it will just be laid over, and remain like that as the light stays on, but after the night period ill turn the lights back on and it will be standing straight as an arrow, any suggestions

heat is too close and hot

my lights are just regulat 60 watt grow lights places almost 10 inches above the plants, and none of the other plants are doing this

is it leaning towards the light ? you might have a spot on your wall where the light reflects.

nah that was my first guess also, or maybe over watering, but that isnt the case, its just laid over in the pot, with the top leaves touching the soil, and the part of the stem thats bent into a L shape is brown