Are my plants stetching for light?

They are under 600w Hps they were a little higher than the picture. I just lowered the light to 18 inches above the plants. But a couple of my smaller plants look a little long between the nodes, are they stretching for light or?

How old are these gurlz? What medium and how much of it are you using? Yes they are stretching for light. But, that may or not be a problem. I have had grows where the nodes seemed so far apart it looked is if it were two plants. But when all was said and done, they harvested well.

HPS will make plants a little stretchy.

My plants never stretched in HPS and ive done my whole first grow using HPS through veg and now in flower.
Try lowering your lights to find the correct height for your area, put your plants at about 10 inches from the light see how they go then.
if you get signs of heat stress bang them up a further inch.
but for a HPS bulb your best height is around 8 inches.

There in fox farm ocean and there about 3 weeks old. They just got thrown into the room thats why there already into flower. but yeah ill lower the light a little more, i dont have a fan on the bulb so i just didnt know if 18in was close enough

as you can see by the chart 18 inches from the bulb is WAY too far away.
your receiving around 12K lumens and your bulb puts out 91K lumens, basically your 600W HPS light is just as effective as a small CFL light...
10 inches is even what I would call too far away, but its a good starting point.