Stretch

looks fine to me. will stretch out more when its in its 2nd stage or blooming. right now apears to be preflower. then flower then end flower/end of life.

Probably just a misperception. They look relatively healthy, so unless you've done somethng differently recently, like amp up the light with same hours of operation, it's probably fine.

Could be bs of Ca deficiency no Ca no normal growth also u have P def

Hard when you guys don’t do diaries, no background to go off. I mean from what I see it appears you have sufficient lighting, pots are of size, plants look healthy. I’m using translate, but I’m think you saying they are week 4? If that’s the case you are just getting to pre flower, I don’t see any pistols yet so give it another week or so and they will stretch, be ready!