Gorilla Glue

Hi there, If the plant is not getting enough light ,they will stretch and look for light.If the light is too close, the leaves will start curling up and the space between internodes will be short.Also you can put your palm on top of your plant and check hot/warm.Your plant will feel the same.Happy growing... ✌️

So I just had a quick look at the light you have it's 100w also I just saw you not running 100% so try turning the light up to 100% but it's worth having a look on you tube seeing exactly what your light is giving off at optimal heights there are some good videos on there showing you the true reading par, Watts everything

If your light is a quantum board about 24 inches 100 percent on. I move plants farther away vs turning light down. It keeps my room temps where I want them is main reason. I don't have experience with that light in particular. But most boards like the spiderfarmer sf1000 and unit farm uf2000 boards 20 to 24 is close enough. On my 2 previous I mentioned. During flowering as close as I can get is 11 to 12 inches in a non sealed area without co2. Hopefully that helps. So in your case turn up that light and you might be in right spot.