Anyone know about hollow stems?

[Trichomefarmer88]

Anyone know about hollow stems? I'm running dwc, two 5 gal buckets both set up the exact same! Running maxibloom Lucas at half strength still, just adding some additives to it, armor si, cal magic, floracius plus, an started adding photo plus by microbe life.... But anyways I got a Girl Scout Cookies from seed going, looking great, then a bubba kush clone, same levels of everything... When I topped the bubba it was fine.. just topped the GSC. An the main Stem is hollow!? Any help here please , what's going on with my girl!!

 

[Potted]

Growing the same strain and believe that it’s normal for some types and not for outhers, anyway it’s ok.I’ve grown bouth hollow and almost solid stalks. Without problem

 

[Dr.Moggs]

Hey!
I'm not so experienced but I think that's normal, especially in hydroculture.
When I scrogged my plants today i accidentally broke a few stems, they also where hollow.

The stem was about 3-4 mm in diameter and the hole about 1 mm.
If this isn't good we both have a problem 😅